Sample program for Concatnating String Using Pointers

#include
#include
#include
void main()
{
char *p[25];
char *q[25];
char a[25], b[25];
int c,d,x;
clrscr();
printf("MENU\n 1. To find string length \n 2. To copy string \n 3. To compare strings \n 4. To concatenate strings\n Enter Option:\n");
scanf("%d",&c);
printf("Enter a string :\n");
scanf("%s",&a);
printf("\nEnter a string:\n");
scanf("%s",& b);
strcpy(*p,a);
strcpy(*q,b);
switch (c)
{
case 1: {
 d=strlen(*p);
 printf("The string length is:%d",d);
 break;
       }
case 2:{
 strcpy(*p,*q);
 printf("copied string is :%s",*p);
 break;
     }
case 3 : {
 x= strcmp(*p,*q);
 if (x!=0)
 printf("NOT SAME");
 else
 printf("SAME");
 break;
      }
case 4: {
 printf("Concatenaed strings :%s", strcat(*p,*q));
 break;
  }
       }
getch();
}