C program to reverse a string

/* C program to reverse a string.*/

#include"stdio.h"

#include"string.h"

void main()

{

char str1[20], str2[20];

int i, j, len;

printf("Enter a string: ");

scanf("%[^\n]s", str1);

len = strlen(str1);

for(i=0, j=len-1; str1[i] != '\n', str2[j] = str1[i]; i++, j--)

{

str2[j] = str1[i];

printf("%c", str1[j]);

}

printf("\n");

}

Output: