C语言编写一个程序

Question

用scanf()从键盘接收一个小于255的整数值,然后用putchar()函数显示对应的字符

Answer 1

#include "stdio.h"

void main()
{
int a;
printf("请输入一个小于255的整数：");
scanf("%d",&a);
while(a>=255)
{printf("输入错误，请重新输入：");scanf("%d",&a);}
printf("%c\n",a);
}

Answer 2

#include<conio.h>
#include<stdio.h>

int main()
{
char ch;

while(1)
{
scanf("%c",&ch);
putchar(ch);
}

getch();
return 1;
}

Answer 3

#include <stdio.h>

void main ()
{
int a = 0 ;
printf ("Please input an integer!\n");
scanf ("%d",&a);

putchar (a);
printf ("\n");
}