题解 | #字符串加解密#
字符串加解密
https://www.nowcoder.com/practice/2aa32b378a024755a3f251e75cbf233a
#include <stdio.h> #include <string.h> int main() { char a[1001];//要加密 char b[1001];//要解密 int i; scanf("%s",a); scanf("%s",b); int alen=strlen(a); int blen=strlen(b); for(i=0;i<alen;i++) { if(a[i]>='a'&&a[i]<='z') { if(a[i]=='z') { a[i]='A'; }else{ a[i]=a[i]-31; } }else if(a[i]>='A'&&a[i]<='Z') { if(a[i]=='Z') { a[i]='a'; }else{ a[i]=a[i]+33; } }else if(a[i]>='0'&&a[i]<='9') { if(a[i]=='9') { a[i]='0'; }else{ a[i]=a[i]+1; } } printf("%c",a[i]); } printf("\n"); for(i=0;i<blen;i++) { if(b[i]>='a'&&b[i]<='z') { if(b[i]=='a') { b[i]='Z'; }else{ b[i]=b[i]-33; } }else if(b[i]>='A'&&b[i]<='Z') { if(b[i]=='A') { b[i]='z'; }else{ b[i]=b[i]+31; } }else if(b[i]>='0'&&b[i]<='9') { if(b[i]=='0') { b[i]='9'; }else{ b[i]=b[i]-1; } } printf("%c",b[i]); } return 0; }