Pointer
practice.

Which of the following declaration is illegal?

What will be the output of the following C code?

#include <stdio.h>
int mul(int a, int b, int c)
{
    return a * b * c;
}
void main()
{
    int (function_pointer)(int, int, int);
    function_pointer = mul;
    printf("The product of three numbers is:%d",
    function_pointer(2, 3, 4));
}

What will be the output of the following C code?

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

What is the maximum number of arguments that can be passed in a single function?

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int ary[4] = {1, 2, 3, 4};
    int p[4];
    p = ary;
    printf("%d\n", p[1]);
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int *((*x)())[2];
    x();
    printf("after x\n");
}
int *((*x)())[2]
{
    int **str;
    str = (int*)malloc(sizeof(int)* 2);
    return str;
}

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int k = 5;
    int *p = &k;
    int **m  = &p;
    **m = 6;
    printf("%d\n", k);
}

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 = 10;
    return &j;
}

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    int no;
    char name[20];
};
void main()
{
    student s;
    s.name = "hello";
    printf("hello");
}

Which of the following are generated from char pointer?

What will be the output of the following C code?

#include <stdio.h>
void f(char *k)
{
    k++;
    k[2] = 'm';
    printf("%c\n", *k);
}
void main()
{
    char s[] = "hello";
    f(s);
}

What will be the output of the following C code?

#include <stdio.h>
void f(int);
void (*foo)(float) = f;
int main()
{
    foo(10);
}
void f(int i)
{
    printf("%d\n", i);
}

Which of the following is the correct syntax to declare a 3 dimensional array using pointers?

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    char *s = "hello";
    char *n = "cjn";
    char *p = s + n;
    printf("%c\t%c", *p, s[1]);
}

What will be the output of the following C code?

#include <stdio.h>
int mul(int a, int b, int c)
{
    return a * b * c;
}
void main()
{
    int (*function_pointer)(int, int, int);
    function_pointer  =  mul;
    printf("The product of three numbers is:%d",
    function_pointer(2, 3, 4));
}

Comment on the output of the following C code.

#include <stdio.h>
int main()
{
    char *str = "This" //Line 1
    char *ptr = "Program\n"; //Line 2
    str = ptr; //Line 3
    printf("%s, %s\n", str, ptr); //Line 4
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    char *a = {"p", "r", "o", "g", "r", "a", "m"};
    printf("%s", a);
}

What will be the output of the following C code (run without any command line arguments)?

#include <stdio.h>
int main(int argc, char *argv[])
{
    while (argv != NULL)
    printf("%s\n",  *(argv++));
    return 0;
}

Read the following expression?

void (*ptr)(int);

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    int a[3] = {1, 2, 3};
    int *p = a;
    int **r = &p;
    printf("%p %p", *r, a);
}