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代码： 全选

#include <stdio.h>
#include <unistd.h>

/* 打印进度条 */
void DisplayProgress(long current, long total) {
    int width = 50; /* 进度条宽度为 50 个字符 */
    int i;
    /* 清空行 */
    for (i = 0; i < width + 7; i++) {
        putchar('\b');
    }
    
    int LoopTimes = (int)((double)current / total * width);

    putchar('[');
    for (i = 0; i < LoopTimes; i++)
        putchar('#');
    for (i = 0; i < width - LoopTimes; i++)
        putchar('-');
    printf("] ");
    printf("%3.0f%%", (double)current / total * 100);    
}

int main(void)
{
    int start = 1, end = 285;
    int i;
    for (i = start; i <= end; i++) {
        DisplayProgress(i, end);
        usleep(100000);
    }
    printf(" Done!\n");
    return 0;
}