processbar.cpp

bar.cpp

#include <bits/stdc++.h>
#ifdef _WIN64
#include <windows.h>
#else
#include <unistd.h>
#endif
using namespace std;

void do_timecomsuming_work() {
#ifdef _WIN64
    Sleep(100);
#else
    usleep(100000);
#endif
}
int main() {
    for (int i = 0; i <= 100; i++) {
        char bar[105];
        int barClen = 70;
        bar[0] = '[', bar[barClen+1] = ']', bar[barClen+2] = '\0';
        for (int j = 1; j <= barClen; j++) {
            if (j < i*barClen/100)
                bar[j] = '=';
            else if (j == i*barClen/100)
                bar[j] = '>';
            else
                bar[j] = ' ';
        }
        printf("\r%s%4d%%", bar, i);
        fflush(stdout);
        do_timecomsuming_work();
    }
    printf("\ndone.\n");
    return 0;
}