Introduction to C Structure of a C Program Variables and Data Types Input and Output Operators in C Decision Making If Statement if...else Statement Nested if Statement Nested if...else Statement Switch Statement Loops For Loop While Loop Do While Loop Loop Comparison Arrays Strings Functions Function Types Library Functions User-Defined Functions Recursion Function Pointers Structures File Handling Common Mistakes Ideas

#include <stdio.h>

int main() {
    int age = 20;            // Integer type
    float height = 5.8;      // Decimal type
    char grade = 'A';         // Character type

    printf("Age: %d\n", age);
    printf("Height: %.1f\n", height);
    printf("Grade: %c\n", grade);

    return 0;
}