c语言 7-11

1、

#include <stdio.h>

int main(void)
{
    float x1 = -0.01;
    int x2 = 0;
    int i;
    float sum1 = 0.0 , sum2 = 0.0;
    
    for(i = 0; i <= 100; i++)
    {
        x1 += 0.01; 
        sum1 += x1; 
        sum2 += (x2++ / 100.0);
        
    }
    printf("x = %f  x = %f
", sum1, sum2);
    return 0;
}