Code:#include <stdio.h>
#include <string.h>
void swap_chars(char* str, int i, int j);
int main()
{
char* s = "Hello World of C";
printf("Before: %s\n", s);
swap_chars(s, 0, 1);
printf("After: %s\n", s);
getchar();
}
void swap_chars(char* str, int i, int j)
{
char t = str[i];
str[i] = str[j];
printf("here");
str[j] = t;
}