C programming Question and Answer Day-6

21. Pattern 1

•

• •

• • •

• • • •

• • • • •

#include<stdio.h>

#include<conio.h>

void main()

{

int i, j, n;

clrscr();

printf("Enter number : ");

scanf("%d", &n);

for(i=1; i<=n; i++)

{

for(j=1; j<=i; j++)

{

printf("• ");

}

printf("\n");

}

getch();

}

22. Pattern 2

• • • • •

• • • •

• • •

• •

•

#include<stdio.h>

#include<conio.h>

void main()

{

int i, j, n;

clrscr();

printf("Enter number : ");

scanf("%d", &n);

for(i=n; i>=1; i--)

{

for(j=1;j<=i;j++)

{

printf("• ");

}

printf("\n"); 

}

getch();

}

23. Pattern 3

         •

       • •

     • • •

   • • • •

 • • • • •

#include<stdio.h>

#include<conio.h>

void main()

{

    char ch = '*';

    int n;

    int i, j, no_of_spaces = 0, spaceCount;

    printf("Enter number : ");

    scanf("%d", &n);

    printf("\n");

    no_of_spaces = n - 1;

    for (i = 1; i <= n; i++)

    {

        for (spaceCount = no_of_spaces; spaceCount >= 1; spaceCount--)

        {

            printf("  "); 

        }

        for (j = 1; j <= i; j++)

        {

            printf("%2c", ch);

        }

        printf("\n");

        no_of_spaces--;

    }

    getch();

}

24. Pattern 4

1

1 2

1 2 3

1 2 3 4

1 2 3 4 5

#include<stdio.h>

#include<conio.h>

void main()

{

int n, i, j;

printf("Enter number : ");

scanf("%d", &n);

for (i = 1; i <= n; i++)

{

for (j = 1; j <= i; j++)

{

printf("%d ", j);

}

printf("\n");

}

getch();

}

25. Pattern 5

1

2 1

3 2 1

4 3 2 1

5 4 3 2 1

#include <stdio.h>

#include<conio.h>

void main()

{

    int i, j, n;

    printf("Enter number : ");

    scanf("%d", &n);

    printf("\n");

    for (i = 1; i <= n; i++)

    {

        for (j = i; j >= 1; j--)

        {

            printf("%d ", j);

        }

        printf("\n");

    }

    getch();

}

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C programming Question and Answer Day -5

16. Program to print first n even numbers.

#include<stdio.h>

#include<conio.h>

void main()

{

int i=2, n;

//to print odd numbers set variable i=1

clrscr();

printf("Enter n : ");

scanf("%d", &n);

while(i<=n)

{

printf("%d\t",i);

i=i+2;

}

getch();

}

17. Program to accept a number and print that number in reverse order.

Ex:- 1024

Output:- 4201

#include<stdio.h>

#include<conio.h>

void main()

{

int reminder, n;

clrscr();

printf("Enter n : ");

scanf("%d", &n);

while(n>0)

{

reminder=n%10;

printf("%d", reminder);

n=n/10;

}

getch();

}

18. Program to accept a number and print sum of it’s digits.

#include<stdio.h>

#include<conio.h>

void main()

{

int reminder, sum=0, n;

clrscr();

printf("Enter n : ");

scanf("%d", &n);

while(n>0)

{

reminder=n%10;

sum=sum+reminder;

n=n/10;

}

printf("Sum of digits : %d",sum);

getch();

}

19. Program to take a number from user and check whether it is Armstrong number or not.

#include<stdio.h>

#include<conio.h>

void main()

{

int i=2, temp, rem, sum=0, n;

clrscr();

printf("Enter n : ");

scanf("%d", &n);

temp = n;

while(n>0)

{

rem = n%10;

sum = sum+(rem*rem*rem);

n = n/10;

}

if(temp==sum)

printf("Entered number is an Armstrong Number");

else

printf("Entered number is not an Armstrong Number");

getch();

}

20. Program to take number from user and print table of that number.

#include<stdio.h>

#include<conio.h>

void main()

{

int i, n;

clrscr();

printf("Enter number : ");

scanf("%d", &n);

for(i=1; i<=10; i++)

printf("%d × %d = %d\n", n, i, n*i);

getch();

}

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C programming Question and Answer Day-4

11. Program to accept three numbers from user and print them in ascending and decending order.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf("Enter numbers:");
scanf("%d%d%d",&a,&b,&c);
if((a>=b)&&(a>=c))
{
   if(b>=c)
   {
      printf("\n Descending order:
      %d %d %d",a,b,c);
      printf("\n Ascending order : 
      %d %d %d",c,b,a);
   }
   else
   {
      printf("\n Descending order : 
      %d %d %d",a,c,b);
      printf("\n Ascending order : 
      %d %d %d",b,c,a);
   }
}
else if((b>=a)&&(b>=c))
{
   if(a>=c)
   {
   printf("\n Descending order : 
   %d %d %d",b,a,c);
   }
}
getch();
}

12. Program to find the roots of a quadratic equation.

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a, b, c, determinant, real;
double r1, r2, imag;
printf("Enter coefficients a, b and c: ");
scanf("%f%f%f", &a, &b, &c);

determinant = b * b - 4 * a * c;
if (determinant > 0)
{
   r1 = (-b + sqrt(determinant)) / (2 * a);
   r2 = (-b - sqrt(determinant)) / (2 * a);
   printf("Roots are: %.2f and %.2f", r1, r2);
}
else if (determinant == 0)
{
   r1 = r2 = -b / (2 * a);
   printf("Roots are: %.2f and %.2f", r1, r2)
}
else
{
   real = -b / (2 * a);
   imag = sqrt(-determinant) / (2 * a);
   printf("Roots are: %.2f+%.2fi and %.2f-%.2fi", real, imag, real, imag);
}
getch();
}

13. Program to accept rollnumber and marks of three subjects from user and print total marks, average and grade.

#include<stdio.h>
#include<conio.h>
void main()
{
int RollNum, m1, m2, m3, total;
float avg;
clrscr();
printf("Enter Roll Number : ");
scanf("%d",&RollNum);
printf("Enter marks for three subjects : ");
scanf("%d%d%d", &m1, &m2, &m3);

total=m1+m2+m3;
avg=total/3.0;

printf("\nTotal is : %d", total);
printf("\nAverage is : %5.2f", avg);

if(avg>80)
printf("\nGrade : A");
else if((avg>60)&&(avg<=80))
printf("\nGrade : B");
else if((avg>40)&&(avg<=60))
printf("\nGrade : C");
else if((avg>=33)&&(avg<=40)
printf("\nGrade : D");
else
printf("\nGrade : Fail");

getch();
}

14. Program to print numbers from 1 to n using while loop.

#include<stdio.h>
#include<conio.h>
void main()
{
int i=1, n;
clrscr();
printf("Enter n : ");
scanf("%d", &n);
while(i<=n)
{
printf("%d\t",i);
i++;
}
getch();
}

15. Program to print numbers from n to 1 using Do While loop.

#include<stdio.h>
#include<conio.h>
void main()
{
int i=1, n;
clrscr();
printf("Enter n : ");
scanf("%d", &n);
i=n;
do
{
printf("%d\t",i);
i--;
}while(i>=1);
getch();
}

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C programming Question and Answer Day-3

11. Program to accept three numbers from user and print them in ascending and decending order.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,c;
clrscr();
printf("Enter numbers:");
scanf("%d%d%d",&a,&b,&c);
if((a>=b)&&(a>=c))
{
   if(b>=c)
   {
      printf("\n Descending order:
      %d %d %d",a,b,c);
      printf("\n Ascending order : 
      %d %d %d",c,b,a);
   }
   else
   {
      printf("\n Descending order : 
      %d %d %d",a,c,b);
      printf("\n Ascending order : 
      %d %d %d",b,c,a);
   }
}
else if((b>=a)&&(b>=c))
{
   if(a>=c)
   {
   printf("\n Descending order : 
   %d %d %d",b,a,c);
   }
}
getch();
}

12. Program to find the roots of a quadratic equation.

#include<stdio.h>
#include<conio.h>
#include<math.h>
void main()
{
float a, b, c, determinant, real;
double r1, r2, imag;
printf("Enter coefficients a, b and c: ");
scanf("%f%f%f", &a, &b, &c);

determinant = b * b - 4 * a * c;
if (determinant > 0)
{
   r1 = (-b + sqrt(determinant)) / (2 * a);
   r2 = (-b - sqrt(determinant)) / (2 * a);
   printf("Roots are: %.2f and %.2f", r1, r2);
}
else if (determinant == 0)
{
   r1 = r2 = -b / (2 * a);
   printf("Roots are: %.2f and %.2f", r1, r2)
}
else
{
   real = -b / (2 * a);
   imag = sqrt(-determinant) / (2 * a);
   printf("Roots are: %.2f+%.2fi and %.2f-%.2fi", real, imag, real, imag);
}
getch();
}

13. Program to accept rollnumber and marks of three subjects from user and print total marks, average and grade.

#include<stdio.h>
#include<conio.h>
void main()
{
int RollNum, m1, m2, m3, total;
float avg;
clrscr();
printf("Enter Roll Number : ");
scanf("%d",&RollNum);
printf("Enter marks for three subjects : ");
scanf("%d%d%d", &m1, &m2, &m3);

total=m1+m2+m3;
avg=total/3.0;

printf("\nTotal is : %d", total);
printf("\nAverage is : %5.2f", avg);

if(avg>80)
printf("\nGrade : A");
else if((avg>60)&&(avg<=80))
printf("\nGrade : B");
else if((avg>40)&&(avg<=60))
printf("\nGrade : C");
else if((avg>=33)&&(avg<=40)
printf("\nGrade : D");
else
printf("\nGrade : Fail");

getch();
}

14. Program to print numbers from 1 to n using while loop.

#include<stdio.h>
#include<conio.h>
void main()
{
int i=1, n;
clrscr();
printf("Enter n : ");
scanf("%d", &n);
while(i<=n)
{
printf("%d\t",i);
i++;
}
getch();
}

15. Program to print numbers from n to 1 using Do While loop.

#include<stdio.h>
#include<conio.h>
void main()
{
int i=1, n;
clrscr();
printf("Enter n : ");
scanf("%d", &n);
i=n;
do
{
printf("%d\t",i);
i--;
}while(i>=1);
getch();
}

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C programming Question and Answer Day-2

6. Program to accept a number from user and print it’s square & cube.

#include<stdio.h>
#include<conio.h>
void main()
{
int n,sqre,cube;
clrscr();
printf("Enter Number: ");
scanf("%d",&n);
sqre=n*n;
cube=n*n*n;
printf("\nSquare: %d\nCube: %d",sqre,cube);
getch();
}


7. Program to accept two values of a & b and swap their values.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,temp;
clrscr();
printf("Enter 1st number: ");
scanf("%d",&a);
printf("Enter 2nd number: ");
scanf("%d",&b);
printf("\nBefore Swapping..\n A=%d, B=%d",a,b);
temp=a;
a=b;
b=temp;
printf("\nAfter Swapping..\n A=%d, B=%d",a,b);
getch();
}

8. Program to accept two number and print largest among them.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
printf("Enter 1st number: ");
scanf("%d",&a);
printf("Enter 2nd number: ");
scanf("%d",&b);
if(a>b)
printf("Largest value is: %d",a);
else
printf("Largest value is: %d",b);
getch();
}

9. Program to accept a number and check whether the number is Positive, Negative or Zero.

#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf("Enter number: ");
scanf("%d",&n);
if(n>0)
printf("Number is positive");
else if(n<0)
printf("Number is negative");
else
printf("Number is Zero");
getch();
}

10. Program to check whether the number is even or odd.

#include<stdio.h>
#include<conio.h>
void main()
{
int n;
clrscr();
printf("Enter number: );
scanf("%d",&n);
if(n%2==0)
printf("Number is even");
else
printf("Number is odd");
getch();
}

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C programming Question and Answer Day-1

1. Program to print "Hello World!!".

#include<stdio.h>
#include<conio.h>
void main()
{
clrscr();
printf("Hello World!!");
getch();
}

2. Program to assign values of two numbers and print their addition.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,ans;
clrscr();
a=10;
b=20;
ans=a+b;
printf("Addition is : %d",ans);
getch();
}

3. Program to accept values of two numbers and print their addition.

#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,ans;
clrscr();
printf("Enter 1st number:");
scanf("%d",&a);
printf("Enter 2nd number:");
scanf("%d",&b);
ans=a+b;
printf("Addition is : %d",ans);
getch();
}

4. Program to print simple interest.

#include<stdio.h>
#include<conio.h>
void main()
{
float interest, p, r, n;
clrscr();
printf("Enter value of P: ");
scanf("%f",&p);
printf("Enter value of R: ");
scanf("%f",&r);
printf("Enter value of N: ");
scanf("%f",&n);
interest=p*r*n/100f;
printed("Simple Interest : %f", interest);
getch();
}

5. Program to accept value of radius and print area of a circle.

#include<stdio.h>
#include<conio.h>
void main()
{
float area,radius;
clrscr();
printf("Enter Radius:");
scanf("%f",&radius);
area=3.14*radius*radius;
printf("Area of the given radius is : %6.2f",area);
getch();
}

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