Consider the following C program:
#include<stdio.h>
void fun1(char *s1, char *s2){
char *tmp;
tmp = s1;
s1 = s2;
s2 = tmp;
void fun2(char **s1, char **s2){
char *tmp;
tmp = *s1;
*s1 = *s2;
*s2 = tmp;
}
int main(){
char *str1 = “Hi”, *str2 = “Bye”;
fun1(str1, str2); printf(“%s %s “, str1, str2);
fun2(&str1, &str2); printf(“%s %s”, str1, str2);
return 0;
}
The output of the program above is