Question

Write a  function (and main) that checks if a string (character array) is a reversal of itself, i.e., if the string is

the same being read from the end. Argument: unsigned char str[]. Output value of type _Bool

returning 1 (TRUE) or 0 (FALSE).

Answer 1

/* Please read all comments*/

/* Source code*/

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

int isReversalSame(char A[],int n){
int i;
//Check for first and last char, second and second last char and so on are same or not
for(i=0;i<=n/2;i++){
if(A[i]!=A[n-1-i]){ //If not same, that can't be reversal of itself
return 0;
}
  
}
  
  
//Return 1 because this would definitely reversal of self
return 1;
  

}
int main() {
  
//Test 1
   unsigned char A[] = "madam";
   int length = strlen(A);
   printf("Is %s is reversal of itself ? ",A);
   int result = isReversalSame(A,length);
   if(result ==1){
   printf("Yes\n");
   }
   else {
   printf("No\n");
   }
  
   //Test 2
   unsigned char B[] = "japan";
   length = strlen(B);
   printf("Is %s is reversal of itself ? ",B);
   result = isReversalSame(B,length);
   if(result ==1){
   printf("Yes\n");
   }
   else {
   printf("No\n");
   }
   return 0;
}

/* Editor */

/* output*/