控制台输出覆盖当前行显示

visual studio下

#include <Windows.h>
for (int i = 0; i < 10; ++i){        
    system("cls");//清屏
    printf("num: %d\n", i);
}

Linux下

for (int i = 0; i < 10; ++i){    
    printf("\033[1A\033[K");    
    printf("num: %d\n", i);
}