C语言for循环实例

/* zeno.c -- series sum */
#include <stdio.h>

int main(void)
{
    int t_ct;       // term count
    double time, power_of_2;
    int limit;

    printf("Enter the number of terms you want: ");
    scanf("%d", &limit);
    for (time=0, power_of_2=1, t_ct=1; t_ct <= limit;
                            t_ct++, power_of_2 *= 2.0)
    {
        time += 1.0/power_of_2;
        printf("time = %f when terms = %d.\n", time, t_ct);
    }

    return 0;
}