Language: C

#include <stdio.h>
 
int main(void){
  int i;
  char st,al[53] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
   
  do{
    scanf("%c", &st);
 
    for(i=0;i<52;i++)
      if(al[i] == st){
        st = al[ (i+26)%52 ];
        break;
      }
 
    printf("%c", st);
 
  }while(st != '\n');
 
  return 0;
}


Compiler output:
main.c:2:1: error: stray '\302' in program
    2 | <U+00A0>
      | ^~~~~~~~
main.c: In function 'main':
main.c:4:1: error: stray '\302' in program
    4 | <U+00A0><U+00A0>int i;
      | ^~~~~~~~
main.c:4:2: error: stray '\302' in program
    4 | <U+00A0><U+00A0>int i;
      |         ^~~~~~~~
main.c:5:1: error: stray '\302' in program
    5 | <U+00A0><U+00A0>char st,al[53] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
      | ^~~~~~~~
main.c:5:2: error: stray '\302' in program
    5 | <U+00A0><U+00A0>char st,al[53] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
      |         ^~~~~~~~
main.c:6:1: error: stray '\302' in program
    6 | <U+00A0><U+00A0><U+00A0>
      | ^~~~~~~~
main.c:6:2: error: stray '\302' in program
    6 | <U+00A0><U+00A0><U+00A0>
      |         ^~~~~~~~
main.c:6:3: error: stray '\302' in program
    6 | <U+00A0><U+00A0><U+00A0>
      |                 ^~~~~~~~
main.c:7:1: error: stray '\302' in program
    7 | <U+00A0><U+00A0>do{
      | ^~~~~~~~
main.c:7:2: error: stray '\302' in program
    7 | <U+00A0><U+00A0>do{
      |         ^~~~~~~~
main.c:8:1: error: stray '\302' in program
    8 | <U+00A0><U+00A0><U+00A0><U+00A0>scanf("%c", &st);
      | ^~~~~~~~
main.c:8:2: error: stray '\302' in program
    8 | <U+00A0><U+00A0><U+00A0><U+00A0>scanf("%c", &st);
      |         ^~~~~~~~
main.c:8:3: error: stray '\302' in program
    8 | <U+00A0><U+00A0><U+00A0><U+00A0>scanf("%c", &st);
      |                 ^~~~~~~~
main.c:8:4: error: stray '\302' in program
    8 | <U+00A0><U+00A0><U+00A0><U+00A0>scanf("%c", &st);
      |                         ^~~~~~~~
main.c:9:1: error: stray '\302' in program
    9 | <U+00A0>
      | ^~~~~~~~
main.c:10:1: error: stray '\302' in program
   10 | <U+00A0><U+00A0><U+00A0><U+00A0>for(i=0;i<52;i++)
      | ^~~~~~~~
main.c:10:2: error: stray '\302' in program
   10 | <U+00A0><U+00A0><U+00A0><U+00A0>for(i=0;i<52;i++)
      |         ^~~~~~~~
main.c:10:3: error: stray '\302' in program
   10 | <U+00A0><U+00A0><U+00A0><U+00A0>for(i=0;i<52;i++)
      |                 ^~~~~~~~
main.c:10:4: error: stray '\302' in program
   10 | <U+00A0><U+00A0><U+00A0><U+00A0>for(i=0;i<52;i++)
      |                         ^~~~~~~~
main.c:11:1: error: stray '\302' in program
   11 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>if(al[i] == st){
      | ^~~~~~~~
main.c:11:2: error: stray '\302' in program
   11 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>if(al[i] == st){
      |         ^~~~~~~~
main.c:11:3: error: stray '\302' in program
   11 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>if(al[i] == st){
      |                 ^~~~~~~~
main.c:11:4: error: stray '\302' in program
   11 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>if(al[i] == st){
      |                         ^~~~~~~~
main.c:11:5: error: stray '\302' in program
   11 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>if(al[i] == st){
      |                                 ^~~~~~~~
main.c:11:6: error: stray '\302' in program
   11 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>if(al[i] == st){
      |                                         ^~~~~~~~
main.c:12:1: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      | ^~~~~~~~
main.c:12:2: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |         ^~~~~~~~
main.c:12:3: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |                 ^~~~~~~~
main.c:12:4: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |                         ^~~~~~~~
main.c:12:5: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |                                 ^~~~~~~~
main.c:12:6: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |                                         ^~~~~~~~
main.c:12:7: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |                                                 ^~~~~~~~
main.c:12:8: error: stray '\302' in program
   12 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>st = al[ (i+26)%52 ];
      |                                                         ^~~~~~~~
main.c:13:1: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      | ^~~~~~~~
main.c:13:2: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |         ^~~~~~~~
main.c:13:3: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |                 ^~~~~~~~
main.c:13:4: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |                         ^~~~~~~~
main.c:13:5: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |                                 ^~~~~~~~
main.c:13:6: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |                                         ^~~~~~~~
main.c:13:7: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |                                                 ^~~~~~~~
main.c:13:8: error: stray '\302' in program
   13 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>break;
      |                                                         ^~~~~~~~
main.c:14:1: error: stray '\302' in program
   14 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>}
      | ^~~~~~~~
main.c:14:2: error: stray '\302' in program
   14 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>}
      |         ^~~~~~~~
main.c:14:3: error: stray '\302' in program
   14 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>}
      |                 ^~~~~~~~
main.c:14:4: error: stray '\302' in program
   14 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>}
      |                         ^~~~~~~~
main.c:14:5: error: stray '\302' in program
   14 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>}
      |                                 ^~~~~~~~
main.c:14:6: error: stray '\302' in program
   14 | <U+00A0><U+00A0><U+00A0><U+00A0><U+00A0><U+00A0>}
      |                                         ^~~~~~~~
main.c:15:1: error: stray '\302' in program
   15 | <U+00A0>
      | ^~~~~~~~
main.c:16:1: error: stray '\302' in program
   16 | <U+00A0><U+00A0><U+00A0><U+00A0>printf("%c", st);
      | ^~~~~~~~
main.c:16:2: error: stray '\302' in program
   16 | <U+00A0><U+00A0><U+00A0><U+00A0>printf("%c", st);
      |         ^~~~~~~~
main.c:16:3: error: stray '\302' in program
   16 | <U+00A0><U+00A0><U+00A0><U+00A0>printf("%c", st);
      |                 ^~~~~~~~
main.c:16:4: error: stray '\302' in program
   16 | <U+00A0><U+00A0><U+00A0><U+00A0>printf("%c", st);
      |                         ^~~~~~~~
main.c:17:1: error: stray '\302' in program
   17 | <U+00A0>
      | ^~~~~~~~
main.c:18:1: error: stray '\302' in program
   18 | <U+00A0><U+00A0>}while(st != '\n');
      | ^~~~~~~~
main.c:18:2: error: stray '\302' in program
   18 | <U+00A0><U+00A0>}while(st != '\n');
      |         ^~~~~~~~
main.c:19:1: error: stray '\302' in program
   19 | <U+00A0>
      | ^~~~~~~~
main.c:20:1: error: stray '\302' in program
   20 | <U+00A0><U+00A0>return 0;
      | ^~~~~~~~
main.c:20:2: error: stray '\302' in program
   20 | <U+00A0><U+00A0>return 0;
      |         ^~~~~~~~