Java C Pointers Test 2 – Java C Pointers Question and Answers

What will be the output of the program assuming that the array begins at the location 1002 and size of an integer is 4 bytes?

#include

int main()
{
int a[3][4] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
printf(“%u, %u, %u “, a[0]+1, *(a[0]+1), *(*(a+0)+1));
return 0;
}

What will be the output of the program if the size of pointer is 4-bytes?

#include

int main()
{
printf(“%d, %d “, sizeof(NULL), sizeof(“”));
return 0;
}

What will be the output of the program ?

#include

int main()
{
char *str;
str = “%s”;
printf(str, “K “);
return 0;
}

What will be the output of the program ?

#include

void fun(void *p);
int i;

int main()
{
void *vptr;
vptr = &i;
fun(vptr);
return 0;
}
void fun(void *p)
{
int **q;
q = (int**)&p;
printf(“%d “, **q);
}

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

#include

int main()
{
int ***r, **q, *p, i=8;
p = &i;
q = &p;
r = &q;
printf(“%d, %d, %d “, *p, **q, ***r);
return 0;
}

What will be the output of the program?

#include

int main()
{
int arr[3] = {2, 3, 4};
char *p;
p = arr;
p = (char*)((int*)(p));
printf(“%d, “, *p);
p = (int*)(p+1);
printf(“%d”, *p);
return 0;
}

What will be the output of the program ?

#include

int main()
{
char *p;
p=”hello”;
printf(“%s “, *&*&p);
return 0;
}

What will be the output of the program?

#include

int main()
{
int arr[2][2][2] = {10, 2, 3, 4, 5, 6, 7, 8};
int *p, *q;
p = &arr[1][1][1];
q = (int*) arr;
printf(“%d, %d “, *p, *q);
return 0;
}

What will be the output of the program ?

#include

int main()
{
void *vp;
char ch=74, *cp=”JACK”;
int j=65;
vp=&ch;
printf(“%c”, *(char*)vp);
vp=&j;
printf(“%c”, *(int*)vp);
vp=cp;
printf(“%s”, (char*)vp+2);
return 0;
}

What will be the output of the program ?

#include

int main()
{
char str[20] = “Hello”;
char *const p=str;
*p=´M´;
printf(“%s “, str);
return 0;
}

What will be the output of the program ?

#include

int main()
{
printf(“%c “, 7[“JavaTpoint”]);
return 0;
}

What will be the output of the program ?

#include
power(int**);
int main()
{
int a=5, *aa; /* Address of a is 1000 */
aa = &a;
a = power(&aa);
printf(“%d “, a);
return 0;
}
power(int **ptr)
{
int b;
b = **ptr***ptr;
return (b);
}

Which of the following statements correctly declare a function that receives a pointer to pointer to a pointer to a float and returns a pointer to a pointer to a pointer to a pointer to a float?

What will be the output of the program ?

#include

int main()
{
char str[] = “peace”;
char *s = str;
printf(“%s “, s++ +3);
return 0;
}

What will be the output of the program ?

#include

int main()
{
char *str;
str = “%d “;
str++;
str++;
printf(str-2, 300);
return 0;
}

If the size of integer is 4bytes, What will be the output of the program?

#include

int main()
{
int arr[] = {12, 13, 14, 15, 16};
printf(“%d, %d, %d “, sizeof(arr), sizeof(*arr), sizeof(arr[0]));
return 0;
}

What will be the output of the program ?

#include
#include

int main()
{
int i, n;
char *x=”Alice”;
n = strlen(x);
*x = x[n];
for(i=0; i {
printf(“%s “, x);
x++;
}
printf(” “, x);
return 0;
}

What will be the output of the program assuming that the array begins at location 1002?

#include

int main()
{
int a[2][3][4] = { {1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1, 2},
{2, 1, 4, 7, 6, 7, 8, 9, 0, 0, 0, 0} };
printf(“%u, %u, %u, %d “, a, *a, **a, ***a);
return 0;
}

What will be the output of the program ?

#include

int main()
{
int i, a[] = {2, 4, 6, 8, 10};
change(a, 5);
for(i=0; i printf(“%d, “, a[i]);
return 0;
}
void change(int *b, int n)
{
int i;
for(i=0; i *(b+1) = *(b+i)+5;
}

Can you combine the following two statements into one?

char *p;
p = (char*) malloc(100);