C/C++在不同系统和编译器上的运行效率

#include <stdio.h>
#include <time.h>

int main(void)
{
    clock_t t = clock();
    int i = 1;
    double sum = 0;
    for( ; ; ) {
        sum += 1.0 / i;
        //printf("%ld\n",i++);
        i++;
        if(sum >=115.0 )    break;
    }
    printf("\n\n%d\n", clock() - t);
    return 0;
}

Windows10(4核8逻辑)

• CodeBlocks16.01上.cpp运行21500
• CodeBlocks16.01上.c运行21429
• MicroSoft Visual Studio 2015上.cpp运行39282

Windows(8核32逻辑)

• MicroSoft Visual Studio 2013上.cpp运行42900

Centos6.6(32逻辑)

• .cpp运行18170
• .c运行18020