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  1. #include <stdio.h>
  2. int main() {
  3.     char s[1000];
  4.     int shift, i;
  5.  
  6.     printf("Enter text: ");
  7.     fgets(s, 1000, stdin);
  8.  
  9.     printf("Enter shift: ");
  10.     scanf("%d", &shift);
  11.  
  12.     for (i = 0; s[i] != '\0'; i++) {
  13.         char c = s[i];
  14.         if (c >= 'A' && c <= 'Z') {
  15.             s[i] = ((c - 'A' + shift) % 26) + 'A';
  16.         }
  17.         else if (c >= 'a' && c <= 'z') {
  18.             s[i] = ((c - 'a' + shift) % 26) + 'a';
  19.         }
  20.     }
  21.  
  22.     printf("Output: %s", s);
  23.     return 0;
  24. }
Success #stdin #stdout 0.01s 5312KB
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stdin
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Standard input is empty
stdout
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Enter text: Enter shift: Output: PHbr�
https://ideone.com/YJgsPW
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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