前言：
现在大家对“c语言电子钟”大致比较讲究，大家都想要分析一些“c语言电子钟”的相关文章。那么小编在网摘上汇集了一些有关“c语言电子钟””的相关资讯，希望姐妹们能喜欢，朋友们一起来了解一下吧！原函数：
clock_t clock(void)
参数：
NA
返回值：
函数返回程序启动以来经过的时钟滴答数。失败时，函数返回值-1。
如何使用clock() 函数：
#include <time.h>
#include <stdio.h>
int main() {
clock_t start_t, end_t, total_t;
int i;
start_t = clock();
printf("Line 1 - Starting of the program, start_t = %ld ", start_t);
printf("Line 2 - Going to scan a big loop, start_t = %ld ", start_t);
for(i=0; i< 100000000; i++) {
}
end_t = clock();
printf("Line 3 - End of the big loop, end_t = %ld ", end_t);
total_t = (double)(end_t - start_t) / CLOCKS_PER_SEC;
printf("Line 4 - Total time taken by CPU: %f ", total_t );
printf("Line 5 - Exiting of the program... ");
return(0);
}
编译和运行上面的程序，产生如下结果：
Line 1 - Starting of the program, start_t = 0
Line 2 - Going to scan a big loop, start_t = 0
Line 3 - End of the big loop, end_t = 400000
Line 4 - Total time taken by CPU: 0.000000
Line 5 - Exiting of the program...
标签： #c语言电子钟
