In this example, we will learn to reverse a string using pointers. The best part is that we will not reverse the string and copy it onto another string, but we will reverse the original string itself.

C Program to Reverse a String Using Pointers

#include <stdio.h> void main() {	char str[255], *ptr1, *ptr2, temp ;	int n,m;	printf("Enter a string: ");	scanf("%s", str);	ptr1=str;	n=1;	while(*ptr1 !='\0')	{	ptr1++;	n++;	}	ptr1--;	ptr2=str;	m=1;	while(m<=n/2)	{	temp=*ptr1;	*ptr1=*ptr2;	*ptr2=temp;	ptr1--;	ptr2++;;	m++;	}	printf("Reverse string is %s", str); } 

To compile and run the above C program, you can use C Programs Compiler Online tool.

Output:

Enter a string: sourcecodeexamples Reverse string is selpmaxeedocecruos