C Free

C free

Created By: chatGPT

C is a general-purpose programming language that is widely used for system and application software. It was developed in the early 1970s at Bell Labs to improve upon the B programming language. C is known for its efficiency, portability, and flexibility. Here’s a simple example of a C program that prints Hello, World! to the console.

#include <stdio.h>

int main() {
    printf("Hello, World!\n");
    return 0;
}

In the example above, #include <stdio.h> is a preprocessor directive that includes the standard input-output library. The main() function is the entry point of every C program. Inside the main function, we have the printf function, which is used to print text to the console.

// Printing to console:
printf("Hello, World!\n");

C also supports variables, allowing you to store data. For instance, you can declare an int variable to store an integer value. Here’s an example that declares a variable, assigns it a value, and then prints it.

int main() {
    int number = 5;
    printf("The number is: %d\n", number);
    return 0;
}

In this code, int number = 5; declares an integer variable named number and initializes it to 5. The printf function is used again, utilizing the %d format specifier to print the integer value.

// Declaring and printing a variable:
int number = 5;
printf("The number is: %d\n", number);

C has powerful control structures such as loops and conditionals. Below is an example of a simple for loop that prints numbers from 1 to 5.

int main() {
    for (int i = 1; i <= 5; i++) {
        printf("%d\n", i);
    }
    return 0;
}

In this code, the for loop iterates from 1 to 5, and the printf function prints the current value of i for each iteration. This illustrates how to execute a block of code multiple times.

// For loop example:
for (int i = 1; i <= 5; i++) {
    printf("%d\n", i);
}

C also allows for the use of functions to organize code into reusable blocks. Below is a simple function that takes two integers and returns their sum.

int sum(int a, int b) {
    return a + b;
}

int main() {
    int result = sum(3, 4);
    printf("Sum is: %d\n", result);
    return 0;
}

The sum function takes two int parameters and returns their total. In main, the result of calling sum(3, 4) is stored in the result variable, which is then printed.

// Using functions:
int sum(int a, int b) {
    return a + b;
}