Primitive

Example 1: Declaring and Initializing Integers

c

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#include <stdio.h>

int main() {

    int age = 25;

    printf("Age: %d\n", age);

    return 0;

}

Example 2: Using float and double for Decimal Numbers

c

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#include <stdio.h>

int main() {

    float temperature = 36.5f;

    double pi = 3.141592653589793;

    printf("Temperature: %.1f\n", temperature);

    printf("Value of Pi: %.15lf\n", pi);

    return 0;

}

Example 3: Using char for a Single Character

c

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#include <stdio.h>

int main() {

    char grade = 'A';

    printf("Grade: %c\n", grade);

    return 0;

}

Example 4: Using char for ASCII Values

c

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#include <stdio.h>

int main() {

    char letter = 65; // ASCII value for 'A'

    printf("Character: %c\n", letter);

    return 0;

}

Example 5: Arithmetic Operations with Integers

c

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#include <stdio.h>

int main() {

    int a = 5, b = 3, sum;

    sum = a + b;

    printf("Sum: %d\n", sum);

    return 0;

}

Example 6: Boolean Simulation with int

c

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#include <stdio.h>

int main() {

    int isEven = 1; // True

    int isOdd = 0;  // False

    printf("Is even: %d\n", isEven);

    printf("Is odd: %d\n", isOdd);

    return 0;

}

Example 7: Using unsigned for Positive Numbers

c

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#include <stdio.h>

int main() {

    unsigned int distance = 300;

    printf("Distance: %u meters\n", distance);

    return 0;

}

Example 8: Using long for Large Numbers

c

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#include <stdio.h>

int main() {

    long population = 7800000000;

    printf("World Population: %ld\n", population);

    return 0;

}

Example 9: Typecasting Between Primitive Types

c

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#include <stdio.h>

int main() {

    int x = 10;

    float y = (float)x / 3;

    printf("Result: %.2f\n", y);

    return 0;

}

Example 10: Reading and Writing Primitive Types

c

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#include <stdio.h>

int main() {

    int num;

    float value;

    char symbol;

    printf("Enter an integer: ");

    scanf("%d", &num);

    printf("Enter a float: ");

    scanf("%f", &value);

    printf("Enter a character: ");

    scanf(" %c", &symbol);

    printf("You entered: %d, %.2f, %c\n", num, value, symbol);

    return 0;

}

Example 1: Declaring and Initializing a char Variable

c

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#include <stdio.h>

int main() {

    char letter = 'A';

    printf("Character: %c\n", letter);

    return 0;

}

Example 2: Using Strings with char Arrays

c

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#include <stdio.h>

int main() {

    char name[] = "Alice";

    printf("Name: %s\n", name);

    return 0;

}

Example 3: Reading a Single char Input

c

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#include <stdio.h>

int main() {

    char symbol;

    printf("Enter a character: ");

    scanf("%c", &symbol);

    printf("You entered: %c\n", symbol);

    return 0;

}

Example 4: Reading a String Input

c

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#include <stdio.h>

int main() {

    char word[20];

    printf("Enter a word: ");

    scanf("%s", word);

    printf("You entered: %s\n", word);

    return 0;

}

Example 5: Printing ASCII Value of a char

c

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#include <stdio.h>

int main() {

    char ch = 'A';

    printf("Character: %c, ASCII Value: %d\n", ch, ch);

    return 0;

}

Example 6: Concatenating Strings Using strcat

c

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#include <stdio.h>

#include <string.h>

int main() {

    char str1[20] = "Hello, ";

    char str2[] = "World!";

    strcat(str1, str2);

    printf("Concatenated String: %s\n", str1);

    return 0;

}

Example 7: Finding the Length of a String Using strlen

c

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#include <stdio.h>

#include <string.h>

int main() {

    char phrase[] = "Programming";

    int length = strlen(phrase);

    printf("Length of the string: %d\n", length);

    return 0;

}

Example 8: Comparing Strings Using strcmp

c

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#include <stdio.h>

#include <string.h>

int main() {

    char str1[] = "Hello";

    char str2[] = "World";

    if (strcmp(str1, str2) == 0) {

        printf("The strings are equal.\n");

    } else {

        printf("The strings are not equal.\n");

    }

    return 0;

}

Example 9: Reversing a String Using strrev

(Note: strrev is not part of the C standard library, so you may need a custom implementation or use it if your compiler supports it.)

c

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#include <stdio.h>

#include <string.h>

int main() {

    char str[] = "C Programming";

    printf("Original String: %s\n", str);

    printf("Reversed String: %s\n", strrev(str)); // Works in some environments like Turbo C.

    return 0;

}

Example 10: Copying Strings Using strcpy

c

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#include <stdio.h>

#include <string.h>

int main() {

    char source[] = "Copy this text";

    char destination[50];

    strcpy(destination, source);

    printf("Copied String: %s\n", destination);

    return 0;

}