c++字符串学习

#include <iostream>#include <cstring>#include <cstdio>#include <cstdlib>using namespace std;int d,t;char s[100000];int main(){    scanf("%d",&d);    d=d% 26;    scanf("%s",s);    for (int i=0;i<strlen(s);i++)    {        t=s[i]+d;        while (t>'z') t=t-'z'+'a'-1;        s[i]=t;    }    printf("%s",s);    return 0;}

字符数组

ASCII与字符直接转换

使用字符串函数要包含头文件cstring