输入两个字符，若这两个字符之差为偶数，则输出它们的后继字符，否则输出它们的前趋字符。这里的前趋和后继是指输入的两个字符中，较小字符前面的和较大字符后面的那个字符。 #include "stdio.h" void main() { char a, b; int m; puts("please inpute two character!"); scanf("%c%c", &a,&b); if(a>b) m=a-b; else m=b-a; if(m%2==0) { printf("the next character of %c is: %c\n", a,a+1); printf("the next character of %c is: %c\n", b,b+1); } else { printf("the forward character of %c is: %c\n", a,a-1); printf("the forward character of %c is: %c\n", b,b-1); }

}

算法有问题 。

#include "stdio.h"
void main()
{
    char a, b,t;
    int m;
   puts("please inpute two character!");
   scanf("%c,%c", &a,&b);
    if(a<b)
       {t=a;a=b;b=t;}
   else
         m=a-b;
     
  if(m%2==0)
     printf("the next character of %c is: %c\n", a-1);
 else
     printf("the forward character of %c is: %c\n", b+1);  
}