Pointers - 48

• Problem Description

  
  Write a program to reverse a string using pointer
  
  Input and Output Format:
  
  Refer sample input and output for formatting specification.
  
  All float values are displayed correct to 2 decimal places.
  
  All text in bold corresponds to input and the rest corresponds to output.

• Test Case 1

  
  Input (stdin)

  SRM university
  
  

  Expected Output

  ytisrevinu MRS

• Test Case 2

  
  Input (stdin)

  asdfghjk
  
  

  Expected Output

  kjhgfdsa

• Program

• #include <stdio.h>
  #include<string.h>
  int main()
  {
   char str[50];
    char rev[50];
    char *sptr=str;
    char *rptr=rev;
    int i=-1;
    scanf("%[^\n]s",str);
    while(*sptr)
    {
      sptr++;
      i++;
    }
    while(i>=0)
    {
      sptr--;
      *rptr=*sptr;
      rptr++;
      --i;
    }
    *rptr='\0';
    rptr=rev;
    while(*rptr)
    {
    *sptr=*rptr;
    sptr++;
    rptr++;
    }
    printf("%s",str);
    return 0;
  }