代码如下：

#include <stdio.h>
#include <Windows.h>

int main() {
    int total = 100;
    int progress = 0;

    char progressBar[101] = {};

    while (progress <= total) {
        progressBar[progress] = '#';

        printf("[%-100s] %d%%", progressBar, progress);
        fflush(stdout);

        Sleep(100);

        printf("\r");
        progress++;
    }

    printf("\n");
    return 0;
}

效果如下：