how to store integer number into a character pointer in c

Question

I am trying to store character as well as integer numbers in the same region through character pointer however, I am not getting the intended result. It is displaying only characters. Here, I have created a character pointer which should contain atleast both characters and integers, then should display them properly.

int main()
{
char c,store[30];
char *p=malloc(30);
 int choice,i=0,n;

 p=store;
while(1)
{
 printf("\n********Menu**********");
 printf("\n1.Enter a character");
 printf("\n2.Enter a Number");
 printf("\n3.Enter a double");
 printf("\n4.Display the values");
 printf("\n0.Exit");
 printf("\nEnter your choice:");
 scanf("%d",&choice);

 switch(choice)
 {
 case 1:
     printf("\nEnter a character:");
     fflush(stdin);
     scanf("%c",&c);

     *p=c;

     p++;
     break;

 case 2:
     printf("\nEnter a Number");
     scanf("%d",&n);
     *p++=n;
     break;
 case 4:

     *p--='\0';
     for(i=0;store[i];i++)
         printf("%c",store[i]);
     break;

 case 0:
    exit(0);
    break;
 }
}

 getch();
 return 0;
}

First of all: Why would you do this??? It's a horrible practice, and shouldn't be done without a lot of extra code to make sure you don't do it wrong. Second: You're doing it badly - in case 2, you should be incrementing p by sizeof(int) and you need a typecast, Third: When you print, you're using %c to print it as a character. If it was an int, print it with %d. Is this an attempted lesson in learning how to use a union? — Scott Mermelstein
– Scott Mermelstein, Commented Sep 26, 2013 at 18:40

P0W · Accepted Answer · 2013-09-26 18:43:48Z

1

You can't simply write doubles and int into a char array.

However with following you could see 0-9 :

case 2:
     printf("\nEnter a Number"); //Just for 0-9   
     scanf("%d",&n);
     *p=n+48; //Convert to ascii
     p++;
     break;

answered Sep 26, 2013 at 18:43

P0W

48.1k9 gold badges78 silver badges124 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Danil Asotsky Over a year ago

What you will receive if user enter, for example, 11 as number?

P0W Over a year ago

@DanilAsotsky ascii corresponding to 11+48, w.r.t my post

Collectives™ on Stack Overflow

how to store integer number into a character pointer in c

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related