01 #include<stdio.h>
02 #include<string.h>
03 #include<malloc.h>
04 
05 int main()
06 {
07     char first[100], second[100], *temp;
08     printf("Enter the first string ");
09     gets(first);
10 
11     printf("Enter the second string ");
12     gets(second);
13 
14     printf("nBefore Swappingn");
15 
16     printf("First string: %sn",first);
17     printf("Second string: %snn",second);
18     temp = (char*)malloc(100);
19     strcpy(temp,first);
20     strcpy(first,second);
21     strcpy(second,temp);
22 
23     printf("After Swappingn");
24     printf("First string: %sn",first);
25     printf("Second string: %sn",second);
26 
27     return 0;
28 }

 
 OUTPUT :
 
 Enter the first string Apple
 Enter the second string Ball
 
 Before Swapping
 First string: Apple
 Second string: Ball
 
 After Swapping
 First string: Ball
 Second string: Apple