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

int main(){
    
  char frase[200];

  strncpy(frase, "AZ", 200);

  for(int i=0; i < strlen(frase); i++){
    
      if(frase[i] >= 65 && frase[i] <= 90){
        frase[i] = (((frase[i] - 65) + 3) % 26)  + 65;
      }else{
          frase[i] = 32;
      }
         
  }

  printf("String: %s", frase);
}