cpu测试

真的，刚开始就是想用这个程序来测一测cpu的性能，然而又被现实打脸，每次结果都不一样，QAQ。

#include<stdio.h>#include<stdlib.h>#include<time.h>int main(void){    clock_t start = 0,end = 0;    double cpu_time = 0;    start = clock();    int a = 0;    for(;a <= 100000;a++)        printf("\n%d",a);        printf("\nWe have finished.");    end = clock();    cpu_time = (double)(end - start) / CLOCKS_PER_SEC;    printf("\n%f seconds.\n",cpu_time);    system("pause");    return 0;  }