C Variables and Data Types

In C, variables are used to store data, and each variable has a type that determines the kind of data it can store.

Common Data Types

• int - for integers
• float - for floating-point numbers
• double - for double precision floating-point numbers
• char - for single characters

Example of Variables

#include 

int main() {
    int age = 25;
    float height = 5.9;
    char grade = 'A';
    printf("Age: %d\n", age);
    printf("Height: %.1f\n", height);
    printf("Grade: %c\n", grade);
    return 0;
}
    

This program declares variables of type int, float, and char and prints their values.