题解 | #简单密码#

#include <stdint.h>
#include <stdio.h>
#include <string.h>

int main() {
    char s[101];
    uint32_t length = 0;

    scanf("%s", s);
    length = strlen(s);
    for (int i=0; i<length; ++i) {
        if (s[i]>='A' && s[i]<='Z') {
            s[i] = s[i]+'a'-'A';
            if (s[i] == 'z') {
                s[i] = 'a';
            } else {
                s[i] += 1;
            }
        } else if (s[i]>='a' && s[i]<='c') {
            s[i] = '2';
        } else if (s[i]>='d' && s[i]<='f') {
            s[i] = '3';
        } else if (s[i]>='g' && s[i]<='i') {
            s[i] = '4';
        } else if (s[i]>='j' && s[i]<='l') {
            s[i] = '5';
        } else if (s[i]>='m' && s[i]<='o') {
            s[i] = '6';
        } else if (s[i]>='p' && s[i]<='s') {
            s[i] = '7';
        } else if (s[i]>='t' && s[i]<='v') {
            s[i] = '8';
        } else if (s[i]>='w' && s[i]<='z') {
            s[i] = '9';
        } else {}
    }
    printf("%s", s);

    return 0;
}