Second semester

Model Question || C Programming Solution2021|| Second Semester(BCA)

2. Write a c program to generate the following output using loop.

Ans:-//a C program to generate above output using loop

#include  <stdio.h>

int main(void)

{

    for(int i=0; i<5; i++){

        for(int j=0; j<5; j++){

            if(j<i){

                printf(" ");

            }

            else{

              printf("%d",(j+1)%2);

            }

        }

        printf("\n");

    }

    return 0;

}

Output:

3. How will you define pointer? Write a program that illustrate how pointer variable change the value of normal variable.

Ans:- A pointer is special type of a variable. It is special because it contains a memory address instead of values(i.e data).

Syntax:

Data_type  * variable name;

Here * is called indirection operator and varilable_name is now pointer..

Example

Int *x;

Float * f;

Char *y;

// Program that illustrate how pointer variable change the value of normal variable

#include <stdio.h>

 main()

{

    int m=100;

    int *p;

    p= &m;

    *p=264;

    printf("\nValue of m  :%d",m);

    printf("\nAddress of m  :%d",&m);

    printf("\nAddress of m using Pointer  :%d",p);

    printf("\nValue of m using Pointer :%d",*p);

    printf("\nAddress  of Pointer :%d",&p);

}