51页第七题

<pre class="cpp" name="code">#include <stdio.h>   #include<stdlib.h>   int main()  {char a,b,c;   printf("输入两个数值：\n");  scanf("%c %c",&a,&b);  c = a-b;  if( c%2==0 ) {if(a>b)  printf("%c\n",(a+1));  elseif(a<b)printf("%c\n",(b+1));}else if( c%2 != 0 )  {if(a>b)   printf("%c\n",(b-1));else  if(a<b) printf("%c\n",a);}return 0;  }