Exercises:

Certainly! Here are some simple exercises in C language along with examples:

1. Calculate the Sum of Two Numbers:

Write a program that takes two numbers as input from the user and calculates their sum.

#include <stdio.h>

int main() {
int num1, num2, sum;

printf("Enter first number: ");
scanf("%d", &num1);

printf("Enter second number: ");
scanf("%d", &num2);

sum = num1 + num2;
printf("Sum = %d\n", sum);

return 0;
}

2. Check if a Number is Even or Odd:

Write a program that checks whether a given number is even or odd.

#include <stdio.h>

int main() {
int num;

printf("Enter a number: ");
scanf("%d", &num);

if (num % 2 == 0) {
printf("%d is even.\n", num);
} else {
printf("%d is odd.\n", num);
}

return 0;
}

3. Calculate Factorial of a Number:

Write a program to calculate the factorial of a given number.

#include <stdio.h>

int main() {
int num, fact = 1, i;

printf("Enter a number: ");
scanf("%d", &num);

for (i = 1; i <= num; i++) {
fact *= i;
}

printf("Factorial of %d = %d\n", num, fact);

return 0;
}

4. Check if a Year is Leap Year:

Write a program to check whether a given year is a leap year or not.

#include <stdio.h>

int main() {
int year;

printf("Enter a year: ");
scanf("%d", &year);

if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
printf("%d is a leap year.\n", year);
} else {
printf("%d is not a leap year.\n", year);
}

return 0;
}

5. Print Fibonacci Series:

Write a program to print the Fibonacci series up to a given number of terms.

#include <stdio.h>

int main() {
int num, first = 0, second = 1, next, i;

printf("Enter the number of terms: ");
scanf("%d", &num);

printf("Fibonacci Series: ");
for (i = 0; i < num; i++) {
printf("%d, ", first);
next = first + second;
first = second;
second = next;
}

return 0;
}

These exercises cover basic concepts such as input/output, arithmetic operations, conditional statements, loops, and functions in C language. They're suitable for beginners to practice and enhance their programming skills.