/* 使用转义序列 */
#include <stdio.h>
int main(void)
{
    float salary;

    printf("\aEnter your desired monthly salary:");
    printf(" $_______\b\b\b\b\b\b\b");
    //退格只回退光标，不删除字符
    scanf("%f", &salary);
    printf("\n\t$%.2f a month is $%.2f a year.", salary, salary * 12.0);
    //n新起一行，t添加一个制表位的空大小
    printf("\rGee!\n");
    //r使得光标回到起始处

    getchar();
    getchar();
    return 0;
}