CODEWITHSUNDEEP
ctypes
sjor
sjor

Reputation: 1458

How to Assign an Integer Value to Unsigned Char* in C

I have an unsigned char* type and want to assign it an integer value. How can I do it in C?

Upvotes: 0

Views: 12893

Answers (3)

unwind
unwind

Reputation: 399803

Just do it, with an appropriate cast:

unsigned char *pointer = (unsigned char *) 0xdeadf00d;

This does exactly what you asked for, it assigns an integer value to a pointer to unsigned char. This is not a very useful thing to be doing, but that's how you do it.

Of course there's no requirement (that I'm aware of) that this is even possible; your architecture's idea of a pointer might not support this, in which case I guess the compiler will tell you.

Upvotes: 4

perilbrain
perilbrain

Reputation: 8197

  #include <stdio.h>
int main()
{
unsigned char *ucrp,*ucr2p;
unsigned char ucr2='X';
int Integr_val=320;
ucr2p=&ucr2 ;
ucrp=(unsigned char *)&Integr_val;
*ucr2p= Integr_val;
return printf("\n %c,%i\n %c,%i",*ucrp,*ucrp,*ucr2p,*ucr2p);
}

With this example you can basically understand what loss you are performing.A char without explicit typecasting can convert an integer value.

Output:-

@,64

@,64

Upvotes: 0

wrren
wrren

Reputation: 1311

unsigned char* a;
int b = 1;

( *a ) = ( unsigned char ) b;

Upvotes: -2

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