程序代码：

#include<stdio.h>
#define a 256
int main(void){
    char ch[a];
    int index;
    index=0;
    scanf("%c",&ch[index]);  
    while(ch[index]!='\n'){
        scanf("%c",&ch[index]);    
        index++;   
    }
    return 0;

程序代码：

#include<stdio.h>
#define a 256
int main(void){
    char ch[a];
    int index;
    index=0;
    scanf("%c",&ch[index]);  
    while(ch[index]!='\n'){
        scanf("%c",&ch[index]);    
        index++;   
    }
    return 0;