Thread: Void Pointers

Can the pointer arithmetic be done on the void pointer? If not, what to do when void pointer is having the
address of some integer or other data type and we want to increment it?

is the declaration correct for type casting a void pointer

*(char *)vptr;

(*(char *)vptr)++; will the void pointer increment

This bit of code

Code:

(*(char *)vptr)++;

will increment

Code:

(*(char *)vptr))

which, if you read it out, is vptr, casted to a pointer-to-char, and then dereferenced to get a char. So, no, you will not increment the pointer.

using void pointers we can increment the value of char and integers .......


but i am not able to increment the value of a float variable

Code:

#include <stdio.h>

int main()
{
    int i=10;
    char ch='B';
    float f = 9.8;
    int *iptr;
    char *cptr;
    float *fptr;
    void *vptr;
    
    iptr = &i;
        
    cptr = &ch;
        
    vptr = cptr;
    (*(char *)vptr)++;
    printf("Incremented value of ch is %c\n",ch);
    
    vptr = iptr;
    (*(int *)vptr)++;
    printf("incremented value of i is %d\n",i);
    
    vptr = fptr;
    (*(float *)vptr)++;
    printf("incremented value of f is %f\n",f);
    getch();
    return 0;
}

ok i got it.......

the problem is solved