1-19

1-19.c

#include <stdio.h>
#define MAXCHAR 100

void reversd(int i, char s[], char r[]);
void cleararray(char array[]);

int main(){
  char s[MAXCHAR];
  char r[MAXCHAR];
  int c;
  int i = 0;
  while((c = getchar()) != EOF){
    if(c != '\n'){
      s[i] = c;
      i++;
    }else{
      reversd(i, s, r);
      printf("%s\n", r);
      i = 0;
      cleararray(s);
      cleararray(r);
    }
  }
}

void reversd(int i, char s[], char r[]){
  i--;
  int j;
  for(j = 0; i >= 0; j++){
    r[j] = s[i];
    i--;
  }
}

void cleararray(char array[]){
  for(int i = 0; i < MAXCHAR; i++){
    array[i] = '\0';
  }
}