#include<stdio.h>
int main(){
    char c1,c2;
    printf("请输入一串英文\n");
        while((c1=getchar())!='\n'){
            if((c1=='z')||(c1=='Z')){
                c2=c1-25;
            }
            else{
                c2=c1+1;
            }
            
        }
        printf("变化之后的英文：%s",c2);
        return 0;
}

非常感谢