C Programming Tutorial: Solutions to Common Exercises394

This comprehensive guide provides solutions to common exercises found in many C programming tutorials. Learning C requires hands-on practice, and working through exercises is crucial for solidifying your understanding of concepts. This document aims to assist you in that process by offering detailed explanations and code examples for a variety of problems. We'll cover a range of topics, from basic input/output and data types to more advanced concepts like pointers, arrays, and functions.

Section 1: Basic Input/Output and Data Types

Exercise 1: Write a program to print "Hello, World!" to the console.

This is the quintessential first program in C. The solution is straightforward:```c
#include
int main() {
printf("Hello, World!");
return 0;
}
```

Exercise 2: Write a program that takes two integer inputs from the user and prints their sum.

This exercise introduces user input and basic arithmetic. The solution involves using the `scanf` function to read input and `printf` to display the result:```c
#include
int main() {
int num1, num2, sum;
printf("Enter two integers: ");
scanf("%d %d", &num1, &num2);
sum = num1 + num2;
printf("Sum: %d", sum);
return 0;
}
```

Exercise 3: Write a program to convert Celsius to Fahrenheit.

This exercise involves using a formula and working with floating-point numbers:```c
#include
int main() {
float celsius, fahrenheit;
printf("Enter temperature in Celsius: ");
scanf("%f", &celsius);
fahrenheit = (celsius * 9.0 / 5.0) + 32.0;
printf("Temperature in Fahrenheit: %.2f", fahrenheit);
return 0;
}
```

Section 2: Control Structures

Exercise 4: Write a program to find the largest of three numbers.

This problem demonstrates the use of `if-else` statements:```c
#include
int main() {
int num1, num2, num3, largest;
printf("Enter three integers: ");
scanf("%d %d %d", &num1, &num2, &num3);
largest = num1;
if (num2 > largest) {
largest = num2;
}
if (num3 > largest) {
largest = num3;
}
printf("Largest number: %d", largest);
return 0;
}
```

Exercise 5: Write a program to print the numbers from 1 to 10 using a `for` loop.

This introduces the fundamental `for` loop construct:```c
#include
int main() {
int i;
for (i = 1; i

2025-03-22

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