What is (void*)0?

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What is (void*)0?

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2) What will be the output of the program If the integer is 4bytes long?

 #include<stdio.h>
int main()
{
int ***r, **q, *p, i=8;
p = &i;
q = &p;
r = &q;
printf("%d, %d, %d\n", *p, **q, ***r);
return 0;
}

3) What will be the output of the following C code?

 #include <stdio.h>
void main()
{
int x = 0;
int *ptr = &5;
printf("%p\n", ptr);
}

4) What would be the equivalent pointer expression for referring the array element a[i][j][k][l]

5) What will be the output of the following C code?

 #include <stdio.h> int *f();
int main()
{
int *p = f();
printf("%d\n", *p);
}

int *f()
{
int *j = (int*)malloc(sizeof(int));
*j = 10;
return j;
}

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