Variables in C

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Variables in C

Integer Variable

#include<stdio.h>  // Include the standard input-output library

int main() {
    // Integer variable declaration and initialization
    int num = 10;  // Integer variable

    // Print the value of the integer variable
    printf("Integer: %d\n", num);

    return 0;
}
        

Floating-Point Variable

#include<stdio.h>  // Include the standard input-output library

int main() {
    // Floating-point variable declaration and initialization
    float fnum = 3.14;  // Floating-point variable

    // Print the value of the floating-point variable
    printf("Float: %.2f\n", fnum);

    return 0;
}
        

Character Variable

#include<stdio.h>  // Include the standard input-output library

int main() {
    // Character variable declaration and initialization
    char ch = 'A';  // Character variable

    // Print the value of the character variable
    printf("Character: %c\n", ch);

    return 0;
}
        

String Variable

#include<stdio.h>  // Include the standard input-output library

int main() {
    // String variable declaration
    char str[100];  // String variable (array of characters)

    // Prompt the user to enter a string
    printf("Enter a string: ");
    scanf("%s", str);

    // Print the value of the string variable
    printf("String: %s\n", str);

    return 0;
}
        

Explanation:

This HTML document contains several simple C programs with syntax highlighting using CSS. Each section demonstrates a different type of variable:

• Integer Variable: int num = 10; - Declares an integer variable num and initializes it to 10.
• Floating-Point Variable: float fnum = 3.14; - Declares a floating-point variable fnum and initializes it to 3.14.
• Character Variable: char ch = 'A'; - Declares a character variable ch and initializes it to 'A'.
• String Variable: char str[100]; - Declares a string variable (array of characters) str with a maximum length of 100 characters.