➤ If-else Statement in C
➤ Programs on if-else
➤ Switch Case in C
➤ Switch case Programs
➤ Conditional Operator
➤ While loop in C
➤ Do-while loop in C
➤ While vs do-while
➤ For loop in C
➤ Break keyword in C
➤ Continue keyword in C
➤ Break vs Exit in C
➤ Goto keyword in C
☕️ Flow Control Programs
➤ Largest in 3 Numbers
➤ Find Grade of student
➤ Find the absolute value
➤ Vowel or Consonant
➤ Leap Year Program
➤ Simple calculator in C
➤ Check Odd or Even
➤ Roots of Quadratic Equation
➤ Find Reverse of Number
➤ Factors of a number in C
➤ Generate Multiplication table
➤ Find Power of a Number
➤ Find GCD and LCM
➤ Find factorial of Number
➤ Count Number of Digits
➤ Sum of digits in Number
➤ Sum of N Natural Numbers
➤ Sum of Squares of Natural No.
➤ Find Sum of Odd Numbers
➤ Find the Sum of Series
➤ Find Fibonacci series in C
➤ Sum of the Fibonacci series
➤ Sum until enters +ve numbers
➤ Sum of max 10 no. & Skip -ve
☕️ C Conversion Programs
➤ Celsius to Fahrenheit
➤ Fahrenheit to Celsius
➤ Decimal ↔ Binary
➤ Decimal ↔ Octal
➤ Octal ↔ Binary in C
☕️ Number Programs in C
➤ Prime Number in C
➤ Strong Number in C
➤ Krishnamurthy Number
➤ Neon Number in C
➤ Palindrome number
➤ Perfect Number in C
➤ Armstrong Number
☕️ Pattern Programs in C
➤ Pattern programs in C
➤ Printing pattern using loops
➤ Floyd’s triangle Program
➤ Pascal Triangle Program
➤ Pyramid Star Pattern in C
➤ Diamond Pattern Programs
➤ Half Diamond pattern in C
➤ Print Diamond Pattern
➤ Hollow Diamond Pattern
➤ Diamond Pattern of Numbers
Previously we learned about switch case statements and now, we will write the switch case example in C.
Switch Case Example in C: Odd-Even
Program:- Write a C program using a switch case to check whether the number entered by the user is odd or even.
#include<stdio.h>
int main()
{
int number;
printf("Enter a number: ");
scanf("%d",&number);
switch( number%2 )
{
case 0:
printf("%d is even.", number);
break;
case 1:
printf("%d is odd.", number);
}
return 0;
}
Output for the different test-cases:-
Enter a number: 8
8 is even.
Enter a number: 9
9 is odd.

Switch case example in C: Check character is vowel or not
Program:- Write a C program to checks whether a character entered by the user is a vowel or not by using the switch case statement.
#include<stdio.h>
int main()
{
char ch;
printf("Enter a character: ");
scanf("%c", &ch);
switch(ch)
{
case 'a':
case 'e':
case 'i':
case 'o':
case 'u':
case 'A':
case 'E':
case 'I':
case 'O':
case 'U':
printf("%c is vowel.", ch);
break;
default:
printf("%c is not a vowel.", ch);
}
return 0;
}
Output for the different test-cases:-
Enter a character: K
K is not a vowel.
Enter a character: a
a is vowel.
If any character either in upper case or lower case is ‘a’, ‘e’, ‘i’, ‘o’, ‘u’ then the character is vowel otherwise it may be constant or space or special word. In this program, we have written a switch case. The case label becomes true if the character is a vowel. When the match is not found then the default statement will be executed.
Menu-driven program to find the area of a circle, triangle, and rectangle
Program:- Write a menu-driven C program to find the area of the circle, area of the triangle and area of the rectangle according to the user’s input choice.
The area is given by,
circle = ℼ*r2
triangle = 0.5*base*height
rectangle = length*breadth
#include<stdio.h>
int main()
{
float r, area, base, height, l, b;
int choice;
printf("1. Area of a circle\n");
printf("2. Area of a triangle\n");
printf("3. Area of a rectangle\n");
printf("Enter your choice: ");
scanf("%d", &choice);
switch(choice)
{
case 1:
printf("Enter the radius of the circle: ");
scanf("%f",&r);
area = 3.14 * r * r;
printf("Area of circle = %.2f",area);
break;
case 2:
printf("Enter the base and height of the triangle: ");
scanf("%f %f",&base, &height);
area = 0.5 * base * height;
printf("Area of triangle = %.2f",area);
break;
case 3:
printf("Enter the length and breadth of the rectangle: ");
scanf("%f %f",&l, &b);
area = l*b;
printf("Area of circle = %.2f",area);
break;
default:
printf("Invalid choice.");
}
return 0;
}
Output for the different test-cases:-
1. Area of a circle
2. Area of a triangle
3. Area of a rectangle
Enter your choice: 1
Enter the radius of the circle: 5
Area of circle = 78.50
1. Area of a circle
2. Area of a triangle
3. Area of a rectangle
Enter your choice: 2
Enter the base and height of the triangle: 10 25
Area of triangle = 125.00
1. Area of a circle
2. Area of a triangle
3. Area of a rectangle
Enter your choice: 3
Enter the length and breadth of the rectangle: 8 6
Area of circle = 48.00
Menu-driven program to convert year
Program:- Write a menu-driven C program to convert a given year into,
- Months
- Days
- Hours
- Minutes
- Seconds
For simplicity don’t include leap year, use
1 Year = 365 days
1 Month = 30 days
#include<stdio.h>
int main()
{
float year;
double months,days,hours,minutes,seconds;
int choice;
printf("Enter year: ");
scanf("%f",&year);
printf("Convert year into,\n");
printf("1. Months\n");
printf("2. Days\n");
printf("3. Hours\n");
printf("4. Minutes\n");
printf("5. Seconds\n");
printf("Enter your choice: ");
scanf("%d",&choice);
switch(choice)
{
case 1:
months = year * 12;
printf("Months in %.2f years = %.2lf",year,months);
break;
case 2:
days = year * 365;
printf("Days in %.2f years = %.2lf",year,days);
break;
case 3:
hours = year * 365 * 24;
printf("Hours in %.2f years = %.2lf",year,hours);
break;
case 4:
minutes = year * 365 * 24 * 60;
printf("Minutes in %.2f years = %.2lf",year,minutes);
break;
case 5:
seconds = year * 365 * 24 * 60 * 60;
printf("Seconds in %.2f years = %.2lf",year,seconds);
break;
default:
printf("Invalid choice.");
}
return 0;
}
Output for the different test-cases:-
Enter year: 5
Convert year into,
1. Months
2. Days
3. Hours
4. Minutes
5. Seconds
Enter your choice: 1
Months in 5.00 years = 60.00
Enter year: 6
Convert year into,
1. Months
2. Days
3. Hours
4. Minutes
5. Seconds
Enter your choice: 2
Days in 6.00 years = 2190.00
Enter year: .5
Convert year into,
1. Months
2. Days
3. Hours
4. Minutes
5. Seconds
Enter your choice: 5
Seconds in 0.50 years = 15768000.00
If you enjoyed this post, share it with your friends. Do you want to share more information about the topic discussed above or do you find anything incorrect? Let us know in the comments. Thank you!
I am very interested in c programming. please proceed to send as many if possible more tutorials as they can help me to master the subject.