2．用gcov得到代码覆盖率。
上一步结束后，在当前目前下会产生两个文件：calnumber.gcda和calnumber.gcno。 这里不关注它们。
直接执行gcov calnumber.c 得到
$gcov calnumber.c
File `calnumber.c'
Lines executed:100.00% of 14
calnumber.c:creating `calnumber.c.gcov'
说明覆盖率文件已经产生了，我们看下calnumber.c.gcov文件：
|
$cat calnumber.c.gcov -: 0:Source:calnumber.c -: 0:Graph:calnumber.gcno -: 0:Data:calnumber.gcda -: 0:Runs:2 -: 0:Programs:1 -: 1:#include <stdio.h> -: 2: -: 3:int main() function main called 2 returned 100% blocks executed 100% 2: 4:{ 2: 5: int i,sum,number; 2: 6: int quit; 2: 7: number = 8; 2: 8: sum = 0; 16: 9: for(i = 0; i <= number; i++) -: 10: { 14: 11: sum += i; -: 12: } -: 13: 2: 14: if(sum != 36) -: 15: { 1: 16: quit = 0; 1: 17: printf("sum = %d\n", sum); -: 18: } else -: 19: { 1: 20: quit = 1; 1: 21: printf("sum is 36\n"); -: 22: } -: 23: 2: 24: if(quit) printf("Finish!\n"); -: 25: 2: 26: return 0; -: 27:} |
