为什么这个整数除法会得到 0？

有人可以告诉我为什么下面的代码会输出0在标记线上？

似乎一切都是正确的，但是当我尝试在接近尾声时得到结果时，它每次都给我 0。

#include <stdio.h>

int main() {

    // Gather time-lapse variables

    int frameRate, totalLengthSecs;
    printf("How many frames per second: ");
    scanf("%i", &frameRate);
    printf("--> %i frames confirmed.", frameRate);
    printf("\nDesired length of time-lapse [secs]: ");
    scanf("%i", &totalLengthSecs);
    printf("--> %i seconds confirmed.", totalLengthSecs);
    int totalFrames = frameRate * totalLengthSecs;
    printf("\nYou need %i frames.", totalFrames);

    // Time-lapse interval calculation

    int timeLapseInterval = totalLengthSecs / totalFrames;

    printf("\n\n%i", timeLapseInterval); // <-- this prints 0

    return 0;
}

简而言之：整数除法截断

您需要以下内容：

double timeLapseInterval = (double) totalLengthSecs / (double)totalFrames;
printf("\ntimeLapseInterval : %f \n", timeLapseInterval);