展望2011

第13章

上一篇 / 下一篇 2009-02-16 23:02:11 / 个人分类：编程基础

2d"sj y;~1JF1J0为了坚持每天写代码，所以每天将写好的代码放到blog上，也许一开始代码写的比较烂，但我相信，万丈高楼平地起，只要坚持每天写代码，编程能力一定会有很大进步的。各位朋友，对代码有什么好的建议和问题，欢迎提出来。

Crx*hm"?0k f-lN0第十三章

13.4从键盘输入一个字符串，将其中的小写字母全部转换成大写字母，然后输出到一个磁盘文件“test”中保存。输入的字符串以“！”结束。
#include <stdio.h>
XjZ+mj5P#M0#include <stdlib.h>51Testing软件测试网R2`6q|{

void main()
1~Hx*i*yw2w0{
[ wy)F-iE/K8~+Wy0 char string[256];
char filename[]={"test.txt"};51Testing软件测试网QwQpI0[\%K
int i=0;
.S"{jL9w,y5eCq0 FILE *fp;
-wKcU.x!F)L2c0 printf("输入一个字符串:");51Testing软件测试网Kg6ZAA9m}D
scanf("%s",string);
A(l*|;Q,W YI)L#r&t"U0 if((fp=fopen(filename,"w+"))==NULL)
rR%W%['U%` Log0 {
u7_"[@A9e/~w0  printf("打开文件失败!\n");
  exit(0);51Testing软件测试网*m Tb$k8`Wq
}51Testing软件测试网%m"u'B4ZZMj}
while(string[i]!='\0')
*AxQ1Nq0 {
D,C)y8X]_F'r9V0  if(string[i]>='a'&&string[i]<='z')
   string[i]=string[i]+'A'-'a';
o`~Os n`0  i++;51Testing软件测试网NjM#Z$a-~*E
}51Testing软件测试网G.LI#mG;m(Q1X
if(fputs(string,fp)!=0)51Testing软件测试网m5y!o H&s
{
8e#Dk5b+a J0  printf("输入文件失败!\n");
Y$K0I6nZ0Q5K F0  exit(0);
|WaJ|8o5R0 }
q ?f F,VW$?:I0 fputc('!',fp);
ls#L.k#~NPk0}

13.5有两个磁盘文件”A”和”B”,各存放一行字母，要求把这两个文件中的信息合并（按字母顺序排列），输出到一个新文件”C”中。
#include <stdio.h>
nw"Jk,vK'P:f0#include <stdlib.h>
An:YFX r_$\bUm0#include <string.h>

9u$_#z+I8BhdR`0void main()
dJvC Ey0{
hZ+V{JS-OW+c0 FILE *fp1,*fp2,*fp3;
kA*m/{5wgT6lq0 char string[512];
.REKw#f6}]Let0 char tmp[256];51Testing软件测试网8nGkPhH
char temp;
d0Kl]\0Yp0 int i=0;
int j=1;51Testing软件测试网s%~8@6V#nj
if((fp1=fopen("A","r"))==NULL)51Testing软件测试网F^lO Wn
{
1N7SNq8W-g8u0  printf("A文件打开失败");
1y@1oh3Q XaO0  exit(0);51Testing软件测试网:s NX%}]r
}
&{ qD N0?0 if((fp2=fopen("B","r"))==NULL)51Testing软件测试网+}@$[iwGq
{
W5X,TI:RK.Nl]0  printf("B文件打开失败");51Testing软件测试网H(L%yM?&c&Q
  exit(0);
}
F&DY"g_+`]*b~0 if((fp3=fopen("C","w+"))==NULL)
LN@KN?0 {
(?r ]Z5J&lp0  printf("C文件创建失败");
Y8OKtWSs0k5p2}d0  exit(0);
LzA-| hSK^#{ }0 }51Testing软件测试网wP3z*?]
fgets(string,10,fp1);
fgets(tmp,10,fp2);
9}bEd1]/OZ_c:kF0  strcat(string,tmp);51Testing软件测试网%om#g.CJ
printf("排序前的字符串为%s",string);
7\]/QtE'H2A+_9Q*E0 while(string[i+1]!='\0')
];Miw5FyN#O0 {
"`[J&`~9dY/vc'q0  while(string[j]!='\0')
^,i5gXbi0  {51Testing软件测试网Ew0Sq ~;V
   if(string[i]>string[j])51Testing软件测试网A#usG,mjqr
   {51Testing软件测试网7W*E{+}4~(o
    temp=string[i];51Testing软件测试网ERl!dJV
    string[i]=string[j];
/bo5Y7L O'oI2_0    string[j]=temp;
JYg/u['Y`8LZ0   }
/_6tQ)rK*MJ;Tc+s0   j++;51Testing软件测试网;i4tNrb9ww
  }51Testing软件测试网I+b+F+}\V^1X
  i++;51Testing软件测试网2YH;hsH qh
  j=i+1;51Testing软件测试网/|DM3II9^
}
x+w GD){[0 fputs(string,fp3);
krcw4Aq0}

Y p?T5aZN013.6 有5个学生，每个学生有3门课的成绩，从键盘输入以上数据（包括学生号、姓名、三门课成绩），计算出平均成绩，将原有数据和计算出的平均分数存放在磁盘文件stud中。51Testing软件测试网Z1UZkf;}
#include <stdio.h>
z1D3} ~+y!`2^.x kq0#include <stdlib.h>
zgd*z0yhJfx0#include <string.h>
#define NUM 5
\,m^xYJ [%sh0struct student_cg
_&y5XB Vv,J.~0{
*_L+Mxv$MC@0 char id[20];
r3]+{3hV!n0 char name[12];
float gk1;
XG'^-@C[4^`0 float gk2;
float gk3;
Z!H.HC5v#w,\&vJ0 float pj;51Testing软件测试网1m!id,C%Y/V
}student[NUM];

v(aijg#h3U0int save_file()51Testing软件测试网3Q!Wb0a H!o
{
int i;
FILE *fp;
}Qm3` y~3BS0 if((fp=fopen("stud","w"))==NULL)51Testing软件测试网 Tg_MPT4kb
{51Testing软件测试网o3e)aMeT$]
  printf("打开文件stud失败");51Testing软件测试网xCds(z5s
  return -1;
}
U5AX@#Z,v0 for(i=0;i<NUM;i++)
QAS ^C,K"Ya\q0  if(fwrite(&student[i],sizeof(struct student_cg),1,fp)!=1)
7i/i"P$f:`&^4H*U'M p0  {
Nx)RiJD3D~0   printf("写入第%d个学生时失败\n",i+1);51Testing软件测试网/~lPH(W
   return -2;
:H ^Q BR"y4w&eS0  }
-x5yNu{pV0 return 0;
'G2w!gP(at*e0}51Testing软件测试网cu7R)R1{5B1}

void main()51Testing软件测试网&fYAH*V |
{51Testing软件测试网@/a G3j5r]]
int i;51Testing软件测试网 IJ8D*SF8MB
printf("请输入%d个学生的学生号、姓名、三门课成绩，以空格分开\n",NUM);
5V+a9Q6f|~0 for(i=0;i<NUM;i++)
b+l6v ZW0  scanf("%s%s%f%f%f",student[i].id,student[i].name,&student[i].gk1,&student[i].gk2,&student[i].gk3);
6N3pH;Z,\Z7o0 for(i=0;i<NUM;i++)51Testing软件测试网QM(Wzh^\@
  student[i].pj=(student[i].gk1+student[i].gk2+student[i].gk3)/3;
N.Xj?&P4~ CUR0 if(save_file()==0)51Testing软件测试网$l;y^"y3U4O$A
  printf("写入文件stud成功\n");
7x+o;gD7Gc*p7b3a0 else
4Pa'vH2R8y0  printf("写入文件stud失败\n");
*^{,`q^U%CLH@0}

EP&L,i+S+yE;ZkRnp013.7 将上题stud文件中的学生数据按平均分进行排序处理，并将已排序的学生数据存入一个新文件stu-sort中。
]q/J!RR;_+Z;G0#include <stdio.h>
;jV[.O(GAMd V0#include <stdlib.h>
7_ bhH`/_\9v0#include <string.h>
#define NUM 5
struct student_cg
#W)y5e]/h2n"~D l0{
*U ~uQ~G m$s0 char id[20];51Testing软件测试网 iO0u\ u};M
char name[12];
(}R4[ k2G4dMKRa0 float gk1;
$q:t?Ez0 float gk2;51Testing软件测试网UfD#ng
float gk3;
&q2PKcIG)`G0 float pj;
\;k!D'j\$].R{b5H0}student[NUM];

q.NyBz0int read_file()
{
CWW5D;_ {4b#s0 int i;
FILE *fp;51Testing软件测试网iDY \&\{
if((fp=fopen("stud","r"))==NULL)
Gy5a%|mj4kz`1g0 {
z#e;_UX9sCf0  printf("打开文件stud失败");
+C$eMGX)L0  return -1;51Testing软件测试网GX5CAi
}
p0q1n.pa9Q0 for(i=0;i<NUM;i++)
N\/f{^&vq.r$@0  if(fread(&student[i],sizeof(struct student_cg),1,fp)!=1)
  {
oMS2N"Kt0   printf("读出第%d个学生时失败\n",i+1);
   return -2;
,JUH(V"O0  }
return 0;
A["K$H+jt`?0}51Testing软件测试网Fgn7cq

1v)aw(x3nmDL;G0int save_file()51Testing软件测试网3gX5te B#|;w
{
/O~1^xB0 int i;
#z#aG LGPf|0 FILE *fp;
^[({1G{!X0 if((fp=fopen("stud-sort","w"))==NULL)51Testing软件测试网^rS3[QSG\
{
  printf("打开文件stud-sort失败");
l*{HWg.b0  return -1;
}
k.x*hX4K'ehA0 for(i=0;i<NUM;i++)
  if(fwrite(&student[i],sizeof(struct student_cg),1,fp)!=1)
  {
   printf("写入第%d个学生时失败\n",i+1);51Testing软件测试网[`5cH3}rJ
   return -2;
!KH"B;N7?k)a2Ue5v7tA0  }
H4X+Y7vJ2v0 return 0;
+HN3P,q0w%n0}51Testing软件测试网%KF_;^;cL6s

void change(int i,int j)
{51Testing软件测试网Ps] L+R.K'[7G
char tmp[20];
CCcwErl.HM'k0 float temp;
2M$m I,Pk%K6D0 strcpy(tmp,student[i].id);
strcpy(student[i].id,student[j].id);51Testing软件测试网H;er+z.q
strcpy(student[j].name,tmp);51Testing软件测试网(T y}T7P
    strcpy(tmp,student[i].name);51Testing软件测试网)b D\ ~ q3c4]
strcpy(student[i].name,student[j].name);
strcpy(student[j].name,tmp);51Testing软件测试网e*m-G3k-h#IS0o
temp=student[i].gk1;
AG&|{)R;S^9Y0 student[i].gk1=student[j].gk1;
vu#j&g2J0 student[j].gk1=temp;
cs+__5q-Kh5d5\ S"D,KY0    temp=student[i].gk2;
+?'m4g N0L5md|5UiB}0 student[i].gk2=student[j].gk2;
v!G4['Yr^G%\0 student[j].gk2=temp;51Testing软件测试网t2BpmA| W|
temp=student[i].gk3;
,_:K7_] `t0 student[i].gk3=student[j].gk3;51Testing软件测试网4f%Qhz_
student[j].gk3=temp;51Testing软件测试网Q es]"PGU R
temp=student[i].pj;
N9q.m1yw;|{0 student[i].pj=student[j].pj;
@#m[}2IX0 student[j].pj=temp;51Testing软件测试网:@#V2y~u#p1@
}
&?G da;`)k0Mx0void paixu()
)uPPn[w@0{
Z(T}b2j]]7J0 int i,j;
)i5jK/tK:?t v0 for(i=0;i<NUM;i++)51Testing软件测试网B(m?Le@
  for(j=i+1;j<NUM;j++)51Testing软件测试网7LaJTx6c2l
   if(student[i].pj>student[j].pj)
AL\%C:ssZ!|4z0    change(i,j);
p%qi5F*ZbR_g0}51Testing软件测试网in1B%Wr

void main()
F-Q8z \*V? WL(cC?0{
[W6k CU(rW2I4_0 if(read_file()!=0)51Testing软件测试网K`$nP'o!Q"`S
exit(0);
m8f,Bd]6n.x0 paixu();
if(save_file()!=0)
?9iI5xQ3\U5A7G B0 exit(0);51Testing软件测试网B)A X hS%{m
}51Testing软件测试网7}kN5|sj,t

;~E9mu2[w013.8 将上题已排序的学生成绩文件进行插入处理。插入一个学生的3门课成绩，程序先计算新插入学生的平均成绩，然后将它按平均成绩高低顺序插入，插入后建立一个新文件。
#include <stdio.h>
#include <stdlib.h>
+`'xX;[#~*jb7bug!I'aC0#include <string.h>
#define NUM 5
(Y x7Bv \'H0struct student_cg
{51Testing软件测试网"B(I'_m/I@
char id[20];
char name[12];
+G@%~'R|0 float gk1;
float gk2;51Testing软件测试网0H3|`,\.eQk
float gk3;51Testing软件测试网!M&SX8dM8uT|
float pj;
kqi/{/j `5jb0}student[NUM];

int read_file()
6h.w,yVq/u0{
-M?5J5]@|0 int i;
'B)T2Jf4jh0 FILE *fp;51Testing软件测试网g r,}bYFk
if((fp=fopen("stud-sort","r"))==NULL)
ssK1O+jc0 {
  printf("打开文件stud-sort失败");51Testing软件测试网mZ8h0CrUX
  return -1;51Testing软件测试网z&[|:r$o
}
%\]miJN0 for(i=0;i<NUM;i++)
bx3[lANC0  if(fread(&student[i],sizeof(struct student_cg),1,fp)!=1)
JGz)E0kL0  {
LM/Vwl:okp#R%V2}0   printf("读出第%d个学生时失败\n",i+1);
#ni5l ^pM"Gn0   fclose(fp);51Testing软件测试网^XMTm;U
   return -2;
9{UWf9_1}S2?0  }
6]+C9jZ:@~r0 fclose(fp);51Testing软件测试网-F2Eci%X t`
return 0;
}

3g9ew6[;? uS*{G^y0void main()
{
student_cg student_tmp;
:dW[)qr x3k0 FILE *fp;
int i,j;51Testing软件测试网M.J MhPE
printf("请输入一个学生的学号、姓名、3门课程成绩，以空格隔开\n");
s@7i)kw/d0 scanf("%s%s%f%f%f",student_tmp.id,student_tmp.name,&student_tmp.gk1,&student_tmp.gk2,&student_tmp.gk3);
?C6O8?2lC3w&X\6Q0 if(read_file()!=0)
'A Ba9`!k:B9A/R0  exit(0);
pd,b0[F0 if((fp=fopen("stud-new","w"))==NULL)
5N.xEc'h }E1\d}0 {
k#uM0w@0  printf("打开文件stud-new失败");
Ib?r4SGY0  exit(0);
%O2_2W$~ev0 }51Testing软件测试网XPo O5|7A&t
student_tmp.pj=(student_tmp.gk1+student_tmp.gk2+student_tmp.gk3)/3;51Testing软件测试网;~"]6o@"m6R
for(i=0;i<NUM;i++)
!Y#c W _;qA0 {
w*?FO*f/R hQ0  if(student[i].pj>student_tmp.pj)
*]d/yv|'Y1ZD0   break;51Testing软件测试网*|1R1A`b]G)q
}
if(i==0)
*T;lZw2\0 {
7E)Jr,Sc,ps3[0  if(fwrite(&student_tmp,sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网SD+j l)^O-Y
  {
   fclose(fp);
i(O H%TH/vNH X0   printf("写文件stud-new失败\n");
h9o$UBY0   exit(0);
8j!Erb2C/e0  }51Testing软件测试网` vT+cCB
  for(i=0;i<NUM;i++)
   if(fwrite(&student[i],sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网fW[&YN^
   {51Testing软件测试网TC!XAk%A*Y
      printf("写入第%d个学生时失败\n",i+1);
        fclose(fp);
rpz0Z+R"bI$F$~Sm0      exit(0);
5k9EO}$krFR0   }51Testing软件测试网w}1{y5z8q
}
else if(i==NUM)
["Jf)^%ZOE0 {51Testing软件测试网O1Ce2`*tk
  for(i=0;i<NUM;i++)
(}wM1OK,C0   if(fwrite(&student[i],sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网,XQ}2Y-y |3Z
   {
"Cu'j o9HL2r0      printf("写入第%d个学生时失败\n",i+1);
q,X/@]3m1^0RM1x0M+yk0        fclose(fp);51Testing软件测试网y7} VFExE
      exit(0);
w&mY'B3B6vN3[0   }
  if(fwrite(&student_tmp,sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网9m^9G#`!Kz"p
  {
4e3oIR5JM2kHv0   fclose(fp);
hf4Ad6Z3Jg0   printf("写文件stud-new失败\n");
   exit(0);51Testing软件测试网 ZC2{K/~$T
  }
K2W*sZg(SA,e3F0 }
else
l1@K&H zkXR}C7k0 {
  for(j=0;j<i;j++)
  {
   if(fwrite(&student[j],sizeof(struct student_cg),1,fp)!=1)
   {
       fclose(fp);51Testing软件测试网3jE:_V$k
      printf("写文件stud-new失败\n");51Testing软件测试网SnNF I9R gi
      exit(0);
   }51Testing软件测试网8Lv&u)ed#lK
  }51Testing软件测试网zA4^/A&Ma.L
        if(fwrite(&student_tmp,sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网B-p J.Ukg:R
  {
   fclose(fp);
;?M9\em9~V&r&G0   printf("写文件stud-new失败\n");
   exit(0);
L3~{ tS)m:MJ0  }51Testing软件测试网(vPN r Jpp*z!T
        for(j=i;j<NUM;j++)
r/Nm BfC.Q2T"`0  {
7Oa1?,B(I^ oT7{$I6}0   if(fwrite(&student[j],sizeof(struct student_cg),1,fp)!=1)
3Uz%cvPg5J9^g0   {51Testing软件测试网'Bi vBy/q
       fclose(fp);
QrLK?,Y]8S0      printf("写文件stud-new失败\n");
[3b*?Z7mt"~G0      exit(0);
^#i"_,Nbs.n0   }
c$Val?.]0  }
}
printf("业务成功处理完成\n");51Testing软件测试网RS?2a*y
}

&|&Q(~0Ww/JKR013.9 上题结果仍存入原有的stu_sort文件而不另建立新文件。
#include <stdio.h>
,O.N0i0E*cS;^0#include <stdlib.h>
w3b"x;WkI{0EZv0#include <string.h>
oL_&\8D&ly0E0#define NUM 5
struct student_cg51Testing软件测试网PN/c.tP*pZ
{51Testing软件测试网(JBb2nj;@8H
char id[20];51Testing软件测试网.z!U0DiF'i
char name[12];51Testing软件测试网] E&G&C,K0e
float gk1;
'BW{uGI0 float gk2;
-L-mwP"R&A0 float gk3;
float pj;
}student[NUM];

[!L-J-z u'r5a)}zY0int read_file()51Testing软件测试网-k#|0SfgM7p@
{
mz0q Z? I$Ub0 int i;
0?^o|~nY!X`#G0 FILE *fp;
if((fp=fopen("stud-sort","r"))==NULL)
:j8\pP0YM-L M.f`z0 {
  printf("打开文件stud-sort失败");
n.\4m.i-B/J0  return -1;
,u6~#T9c\]p0 }51Testing软件测试网\;V ca/?pl
for(i=0;i<NUM;i++)51Testing软件测试网4D^!JV+k
  if(fread(&student[i],sizeof(struct student_cg),1,fp)!=1)
"g#Zv(Kfa0  {
   printf("读出第%d个学生时失败\n",i+1);
   fclose(fp);
8VM$Q E6HL;P0   return -2;
  }
fclose(fp);
-Y3rJQ/x@pn0 return 0;
_;wsjp.G0}51Testing软件测试网ga]'kq

void main()
{51Testing软件测试网fS ~DEq\
student_cg student_tmp;51Testing软件测试网)Cd'N0RU&M3r
FILE *fp;
[*K@u4r W;A!| i0 int i,j;
j3MHY{0 printf("请输入一个学生的学号、姓名、3门课程成绩，以空格隔开\n");
gG7VP lJ`0 scanf("%s%s%f%f%f",student_tmp.id,student_tmp.name,&student_tmp.gk1,&student_tmp.gk2,&student_tmp.gk3);
if(read_file()!=0)
v*r%N.}`G0  exit(0);51Testing软件测试网Xk$dQd
if((fp=fopen("stud-sort","w"))==NULL)51Testing软件测试网h,L:Fv k6v
{
A2{ A"t?'gg]0  printf("打开文件stud-sort失败");
fd9`XK'_#])t0  exit(0);
*Dj'ED{:[zq0 }
6BgTTG-O Xls0 student_tmp.pj=(student_tmp.gk1+student_tmp.gk2+student_tmp.gk3)/3;
for(i=0;i<NUM;i++)51Testing软件测试网8NE&I$p/MyA
{
  if(student[i].pj>student_tmp.pj)
P#mRfg%O0   break;
}
3A+S1G2m+YRu0 if(i==0)
6R!n4bRX.SW0 {51Testing软件测试网)@W9f ur
  if(fwrite(&student_tmp,sizeof(struct student_cg),1,fp)!=1)
A#Msm}|(u z0j0  {
ya*h!Ph[m2`Q0   fclose(fp);51Testing软件测试网I+lth1u){6~
   printf("写文件stud-sort失败\n");
0T { a$n*b^$Y.b6Qm0   exit(0);
v?ti*Kb2[c0N,U0  }51Testing软件测试网7qVq[+k(F'y
  for(i=0;i<NUM;i++)
   if(fwrite(&student[i],sizeof(struct student_cg),1,fp)!=1)
   {
4?\ M+CY4['q0      printf("写入第%d个学生时失败\n",i+1);
eK#VU5~$aB0        fclose(fp);
?o4^z'c*[$H0      exit(0);
{H5r9L:?6{0   }
}51Testing软件测试网.m1DH"PT
else if(i==NUM)
{
R XI3H3my0  for(i=0;i<NUM;i++)
   if(fwrite(&student[i],sizeof(struct student_cg),1,fp)!=1)
~!h.]E y-v'^7OG0   {
\Zt-mzc0      printf("写入第%d个学生时失败\n",i+1);51Testing软件测试网ss9t1TXI Y
        fclose(fp);
      exit(0);51Testing软件测试网'hbxRev-|
   }51Testing软件测试网 A&FO7b,Qt$I
  if(fwrite(&student_tmp,sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网7\{W5e5]7j
  {
   fclose(fp);51Testing软件测试网K;{C6[+F
   printf("写文件stud-sort失败\n");
l~D j.m#R+y0   exit(0);51Testing软件测试网/P,Tz3z,p!w
  }
$n5F'S-cn0r:HC0 }
[!\i|A0 else
3?fa2|5NnT)zu$y%z0 {
z'}w&\+fd&Z0  for(j=0;j<i;j++)
@EU1Z_2W0  {
   if(fwrite(&student[j],sizeof(struct student_cg),1,fp)!=1)
/WM k$S.o1}7p0   {
       fclose(fp);
&i7ZqJ`)a$L0      printf("写文件stud-sort失败\n");51Testing软件测试网\q+t3[B.G
      exit(0);
   }
  }
h Rx8av0        if(fwrite(&student_tmp,sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网F3P[h+^Bt#f
  {51Testing软件测试网's!@HLT
   fclose(fp);51Testing软件测试网mGb*oV]5`
   printf("写文件stud-sort失败\n");51Testing软件测试网i8~N4J?(Lf
   exit(0);51Testing软件测试网vwi}Kw_
  }
!A&e&E9bho0        for(j=i;j<NUM;j++)
*d4ntyC7q7v p0  {
#[Oj$h#Z LQn-AY%SA0   if(fwrite(&student[j],sizeof(struct student_cg),1,fp)!=1)51Testing软件测试网 vrR z]Rt1[
   {
S:y}7e1Fwt1K0       fclose(fp);
0}$KLjk#g"A`0      printf("写文件stud-sort失败\n");
s&Mg)?M0      exit(0);
muk1^1U{c0   }51Testing软件测试网"hAP)n.~C.{
  }51Testing软件测试网L N5a.~;X\*O
}51Testing软件测试网:Fm\1Q*_Z`t
printf("业务成功处理完成\n");
+jmKT;xC9r p0}51Testing软件测试网`Q^#Fz

13.10 有一磁盘文件emploee,内存放职工的数据。每个职工的数据包括：职工姓名、职工号、性别、年龄、住址、工资、健康状况、文化程度。要求将职工名和工资的信息单独抽出来另建一个简明的职工工资文件。
(E?u9S/EiLQta&I0#include <stdio.h>
6hR n5{-J9Zn$Q$BR0S^0#include <stdlib.h>
rc(H*t%|@+Lo0#include <string.h>
P0D!lB]u&H0#define NUM 5
'K E6wGG X0struct PERSON
/_I e%~6|PZe0{51Testing软件测试网0I`M-V0B N#u
char name[12];
i4Qk;pgdf:L*Z4P0 char id[20];51Testing软件测试网V%R+^ i`9lX%q
char xb[8];
int nl;
Qhs _{l0 char adr[30];
float gz;
char jk[8];
Oo0BcmqC0 char wh[8];51Testing软件测试网5y!nA5\jif~
}person[NUM];51Testing软件测试网/p&GqY)mm,~

oH}7^"A4K&W0struct PERSON_NEW
rZx,j+Ex8?a0{51Testing软件测试网Rs p9r!h
char name[12];
G4T7_6V:@-O y3y:I0 float gz;
}person_new[NUM];51Testing软件测试网:[0x1v+i4F^

int read_file()
&^`#x"rl_;~'~ft0{
int i;
&u9t.|@N+xug0 FILE *fp;
!?%m7H h)l0 if((fp=fopen("emploee","r"))==NULL)
l:dn/r \1s9t0 {51Testing软件测试网JOV%r_-G5U
  printf("打开文件emploee失败");51Testing软件测试网.rX jpX
  return -1;51Testing软件测试网$QC!ANb}7F t
}51Testing软件测试网+@T*}S)V
for(i=0;i<NUM;i++)
w p,w~?Vo)d0  if(fread(&person[i],sizeof(struct PERSON),1,fp)!=1)
8a0dx#C({.mhEC m#|0  {
   printf("读出第%d个职工时失败\n",i+1);
   fclose(fp);
}']J.P;\%e0   return -2;
  }51Testing软件测试网@S+dxibL
fclose(fp);
1P7XVk7aOQ0 return 0;
@|2U9rOp4E0}

int write_file_1()
3[r N.z9O%Z0{
int i;
FILE *fp;
3J_+K'sD0 if((fp=fopen("emploee","w"))==NULL)
:Pd'G(tm5i$P#l0 {
q3\C&ID.B/\0  printf("打开文件emploee失败");51Testing软件测试网3a*RH;n TY0n
  return -1;
5Qh$I2t5L/`0V0 }
for(i=0;i<NUM;i++)51Testing软件测试网\Z,zWC'[5x$@
  if(fwrite(&person[i],sizeof(struct PERSON),1,fp)!=1)51Testing软件测试网v}G'_#q@
  {
Y$jMf#n)c0[0   printf("写入第%d个职工时失败\n",i+1);
R {9`xW~7Fl0   fclose(fp);
Kq7B^Up0   return -2;51Testing软件测试网1@E+JwjO2k
  }51Testing软件测试网.Y|1b+Pxh ~
fclose(fp);
e8oD8k+h1R-rUD0 return 0;51Testing软件测试网,w9Gvf)i
}

int write_file_2()51Testing软件测试网D,A&KHK
{
_j;S~l$\)wR3j0 int i;51Testing软件测试网,gu*TX:qL'n
FILE *fp;
if((fp=fopen("emploee_new","w"))==NULL)51Testing软件测试网0E5G"f1ZK"ZW
{
%PG0IQ_0  printf("打开文件emploee_new失败");
p(]%T)\?*?6u6k0  return -1;51Testing软件测试网r*]!K'tv8lT
}
for(i=0;i<NUM;i++)
K3f$I/\j2s$y0  if(fwrite(&person_new,sizeof(struct PERSON_NEW),1,fp)!=1)
  {51Testing软件测试网6?)].Fr}
     printf("写入新文件失败\n",i+1);
     fclose(fp);51Testing软件测试网s B/{kj*Cfh7t
     return -2;51Testing软件测试网TBiq h5x| h
  }
z9`&f9GMWOi{'F0 fclose(fp);
0lu%g+nFo;y0 return 0;
&JI/Z0]pC0}51Testing软件测试网$e)hu0w f[q

void main()51Testing软件测试网Tw1w A8I
{
Z)W3KX](y0 int i;51Testing软件测试网;LMWy'Dn
for(i=0;i<NUM;i++)
{51Testing软件测试网%q"`wY]/c
  strcpy(person[i].name,"name");
L:a;k;A)o[0  strcpy(person[i].id,"123");
y)A([?ydG+z0  strcpy(person[i].xb,"女");
,m/GV`5v1uT0  person[i].nl=20;51Testing软件测试网p7Ox0_ @)YjY
  strcpy(person[i].adr,"深圳");
/aOF |N.B;MO0k0  person[i].gz=10000;
F!YTM H T'il/{ K0  strcpy(person[i].jk,"优");
E K+A/kh0  strcpy(person[i].wh,"本科");51Testing软件测试网f]nF/a2oG
}
write_file_1();
    read_file();
,t,v R*k+`5_b,M0    for(i=0;i<NUM;i++)51Testing软件测试网 ? cw/Ql-Xf
{
,tt0EW$G^S0  strcpy(person_new[i].name,person[i].name);
L*c7Z3VI5d2thC3JH0  person_new[i].gz=person[i].gz;51Testing软件测试网 e }c5c4lZ
}51Testing软件测试网$J!y bU+f
write_file_2();
printf("业务成功处理完成\n");
}51Testing软件测试网*H-M(m6l!d[

13.11 从上题的“职工工资文件”中删去一个职工的数据，再存回原文件。
#include <stdio.h>
S-`0xlk:^0#include <stdlib.h>51Testing软件测试网/fW TD f%t2]
#include <string.h>
;[Y c3U:OZ:A3H1[U0#define NUM 551Testing软件测试网A4[RBrQ

struct PERSON_NEW
Gqtr#G6c^!z1e5O0{
:XIiFz4M0 char name[12];51Testing软件测试网8G3R+TC _5L Q
float gz;
)w.Y-}!k4l ec0W0}person_new[NUM];

E gT1[U'V}2gn/s0int read_file()
{
{rhy,U#Y7NaZ+e9V(fM0 int i;51Testing软件测试网7qg;{V9T7j6R
FILE *fp;
e^CRR4^0 if((fp=fopen("emploee_new","r"))==NULL)
oQFB+[p0 {
9p4_2xjg J%Do0  printf("打开文件emploee_new失败");
  return -1;
XWB8^C*G0 }
c b/xz%?9m(P0 for(i=0;i<NUM;i++)
  if(fread(&person_new[i],sizeof(struct PERSON_NEW),1,fp)!=1)
  {
j0^~-E'|0   printf("读出第%d个职工时失败\n",i+1);
   fclose(fp);
   return -2;51Testing软件测试网L4u"G+VY gP8`
  }
&t,L b?2hc6U0 fclose(fp);
%j&mi?5nw|$e0 return 0;
}

$YVZ4E/n!F0int write_file()
{
wsw;|)uZ0 int i;
FILE *fp;
if((fp=fopen("emploee_new","w"))==NULL)
0mweWc P7s0 {
  printf("打开文件emploee_new失败");51Testing软件测试网Ue3@ ~K#cr
  return -1;
!U5t0ur"I _X0 }
GR[Nz)Ww?9D Xa.Y0 for(i=0;i<NUM-1;i++)51Testing软件测试网{.b0S/U*?!a.W
  if(fwrite(&person_new,sizeof(struct PERSON_NEW),1,fp)!=1)
&@1F1wN cv"w0  {
     printf("写入新文件失败\n",i+1);51Testing软件测试网(J:Q&i4H D*\:x
     fclose(fp);
z3bjF(V+h`2|0     return -2;
  }51Testing软件测试网{t cHGg
fclose(fp);
return 0;
}51Testing软件测试网4o$YgP3DA

void main()
{51Testing软件测试网:r V;g T K"N-k
int num;
uXHvly4]0 int i;51Testing软件测试网)li~&sZ5?
printf("请输入需要删除第几个职工(1-5):");
\m/q+| bKD0 scanf("%d",&num);
oj&uLw/xS0 if(num>NUM||num<1)
)wZiyegn0 {
t"Cp#Tk'wg9y2uB;G0  printf("输入错误\n");51Testing软件测试网.k*}:Jer2J5X
  exit(0);
#CI.i`b[0 }
HCW"A#_0    read_file();
for(i=num;i<NUM-1;i++)
*a%Xv{w0 {
  strcpy(person_new[i-1].name,person_new[i].name);
M5\?|bV/Nj#mjh0  person_new[i-1].gz=person_new[i].gz;
}51Testing软件测试网 `4o*Nk$RsN
write_file();
printf("业务成功处理完成\n");
1ug a9EA0}

13.12 从键盘输入若干行字符（每行长度不等），输入后把它们存储到一磁盘文件中。再从该文件中读入这些数据，将其中小写字母转换成大写字母后在显示屏上输出。
#include <stdio.h>
\5n2i6a T \m T&_9R1t0W0#include <stdlib.h>51Testing软件测试网7[(g1i,A] y
#include <string.h>51Testing软件测试网;Y,EgV'Gq `
#include <ctype.h>
#define NUM 5

void write_file()
x"pwn*aWhY0{
;\9Ui)tb)ZP/J0 char string[NUM][1025];
K&Jtkx"MD0 FILE *fp;
&Tr#FU }]+r q$T,~0 int i;
printf("请输入%d行字符串\n",NUM);
l;T5W8KB6N\0 for(i=0;i<NUM;i++)
  scanf("%s",string[i]);51Testing软件测试网e1h/i!r?Bq'Q
if((fp=fopen("12file","w"))==NULL)
FWygN0 {
o\)BW'wG\6|b0  printf("文件打开失败\n");51Testing软件测试网1u W G-p3m+X
  exit(0);51Testing软件测试网hzM6eTo
}
xf@1g5|,jX5J_'Q]0 for(i=0;i<NUM;i++)51Testing软件测试网5l${d&`7]M/[
{
F-W9^WG2G0  fputs(string[i],fp);51Testing软件测试网,{-Re-U`/uz
  fputc('\n',fp);
}
U\$W:XI|I4Y^@s0 fclose(fp);
printf("写入文件成功\n");51Testing软件测试网zB^%pM!RO2Oa
}

sA$J$X\@]SR3?@0void main()
n]8sQ)jh)|N"|Urk0{51Testing软件测试网*N e![1`1_~@
char string[NUM][1025];
k\Y2JX2A0 FILE *fp;
#OWh`GwO0 int i,j;
/X M6B!}1CH7Z1y0 write_file();51Testing软件测试网?`e#Zrh+r
if((fp=fopen("12file","r"))==NULL)
{
$JvY],xD t0  printf("文件打开失败\n");
t V.a}(`V.njBg0  exit(0);
tR3S b"J(oX2[4N0 }
9@|(x+N+\0 for(i=0;i<NUM;i++)
2Lx_4U5W]!q!G,\0 {
)v^L)dOs4F0  fgets(string[i],10,fp);51Testing软件测试网8jFB"X9m#id
  j=0;
  while(string[i][j]!='\0')
:~B"v#z6j D9EE0  {
   if(islower(string[i][j])>=1)
    string[i][j]=toupper(string[i][j]);51Testing软件测试网:M/bE8r(@5F+mB
   j++;
  }
  printf("%s",string[i]);
}
aYU\p._-UQz0 fclose(fp);51Testing软件测试网N(b:?y)o
}