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  1. #include <stdio.h>
  2. #include <cs50.h>
  3. #include <stdlib.h>
  4. #include <string.h>
  5. #include <ctype.h>
  6. int main(int argc, string argv[])
  7. {
  8.  
  9.  
  10.  
  11.     if (argc != 2)
  12.     {
  13.         printf("wrong!");
  14.         return 1;
  15.     }
  16.     else
  17.     {
  18.         int k = atoi(argv[1]) % 26;
  19.         string p = GetString();
  20.  
  21.         for (int i = 0, s = strlen(p); i < s; i++)
  22.         {
  23.             if(isalpha(p[i]))
  24.             {
  25.                 if (isupper(p[i]))
  26.                 {
  27.                     int n = k + p[i];
  28.                     if (n > 90 || n < 65)
  29.                     {
  30.                         printf("%c", p[i] - 26 + k);
  31.                     }
  32.                     else
  33.                     {
  34.                         printf("%c", n);
  35.                     }
  36.                 }
  37.                 else if (islower(p[i]))
  38.                 {
  39.                     int n = k + p[i];
  40.                     if (n > 122 || n < 97)
  41.                     {
  42.                         printf("%c", p[i] - 26 + k);
  43.                     }
  44.                     else
  45.                     {
  46.                         printf("%c", n);
  47.                     }
  48.                 }
  49.                 else
  50.                 {
  51.                     printf("%c", p[i]);
  52.                 }
  53.  
  54.             }
  55.             else
  56.             {
  57.                 printf("%c", p[i]);
  58.             }
  59.  
  60.         }   
  61.         printf("\n");
  62.  
  63.         return 0;
  64.     }
  65. }
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.c:2:18: fatal error: cs50.h: No such file or directory
compilation terminated.
stdout 
Standard output is empty
https://ideone.com/w9aKmO
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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