Pointer
practice.

What is the index of the last argument in command line arguments?

What makes the following declaration denote?

int **ptr;

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    foo(ary);
}
void foo(int **ary)
{
    int i = 10, k = 20, j = 30;
    int *ary[2];
    ary[0] = &i;
    ary[1] = &j;
    printf("%d\n", ary[0][1]);
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    char str[] = "hello, world";
    str[5] = '.';
    printf("%s\n", str);
    return 0;
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int i = 10;
    int *const p = &i;
    foo(&p);
    printf("%d\n", *p);
}
void foo(int **p)
{
    int j = 11;
    *p = &j;
    printf("%d\n", **p);
}

Which of the following arithmetic operation can be applied to pointers a and b?
(Assuming initialization as int *a = (int *)2; int *b = (int *)3;)

What will be the output of the following C code?

#include <stdio.h>
void main()
{
    char a[10][5] = {"hi", "hello", "fellows"};
    printf("%d", sizeof(a[1]));
}

Comment on the following two operations.

int *a[] = {{1, 2, 3}, {1, 2, 3, 4}}; //- 1
int b[4][4] = {{1, 2, 3}, {1, 2, 3, 4}};//- 2

Which function is not called in the following C program?

#include <stdio.h>
void first()
{
    printf("first");
}
void second()
{
    first();
}
void third()
{
    second();
}
void main()
{
    void (*ptr)();
    ptr = third;
    ptr();
}

Which of the following syntax is correct for command-line arguments?

What is the correct way to declare and assign a function pointer?

(Assuming the function to be assigned is "int multi(int, int);")

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    int no = 5;
    char name[20];
};
void main()
{
    struct student s;
    s.no = 8;
    printf("hello");
}

What type of array is generally generated in Command-line argument?

What will be the output of the following C code?

#include <stdio.h>
void f(int (*x)(int));
int myfoo(int i);
int (*foo)(int) = myfoo;
int main()
{
    f(foo(10));
}
void f(int (*i)(int))
{
    i(11);
}
int myfoo(int i)
{
    printf("%d\n", i);
    return i;
}

What will be the output of the following C code?

#include <stdio.h>
void fun(char *k)
{
    printf("%s", k);
}
void main()
{
    char s[] = "hello";
    fun(s);
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int i = 0, j = 1;
    int *a[] = {&i, &j};
    printf("%d", *a[0]);
    return 0;
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    int *ptr, a = 10;
    ptr = &a;
    *ptr += 1;
    printf("%d,%d/n", *ptr, a);
}

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;
}

Comment on the following two operations.

int *a[] = {{1, 2, 3}, {1, 2, 3, 4}}; //- 1
int b[][] = {{1, 2, 3}, {1, 2, 3, 4}}; //- 2

Which of the following is a correct syntax to pass a Function Pointer as an argument?