2-C-Variables.md

C Variables

Video Link: https://youtu.be/h4VBpylsjJc Tutorial Link: https://www.programiz.com/c-programming/c-variables-constants

Print Line of Text

#include <stdio.h>

int main() {

  int age = 25;
  printf("C Programming");

  return 0;
}

Output

C Programming

---

Print Variable

#include <stdio.h>

int main() {

  int age = 25;
  printf("%d", age);

  return 0;
}

Output

25

---

Print Text and Variable Together

#include <stdio.h>

int main() {
  
  int age = 25;
  printf("Age: %d", age);

  return 0;
}

Output

Age: 25

---

Change Value of Variable

#include <stdio.h>

int main() {

  int age = 25;
  printf("Age: %d ", age);

  age = 31;
  printf("New age:  %d", age);

  return 0;
}

Output

Age: 25 New age: 31

---

Change Value of Variable Example 2

#include <stdio.h>

int main() {

  int age = 25;
  printf("Age: %d", age);

  age = 31;
  printf("\nNew age value: %d", age);

  return 0;
}

Output

Age: 25
New age value: 31

---

Assign one variable to another variale

#include <stdio.h>

int main() {

  int firstNumber = 33;
  printf("first Number = %d ", firstNumber);

  int secondNumber = firstNumber;
  printf("\nsecond Number = %d", secondNumber);

  return 0;
}

Output

first Number = 33
second Number = 33

Declare Multiple Variables at once

#include <stdio.h>

int main() {
    int variable1, variable2; 
    return 0;
}

#include <stdio.h>

int main() {
    int variable1, variable2 = 25; 
    return 0;
}

---

Programiz Quiz

Q. Can you guess the output of this program?

#include <stdio.h>

int main() {

  int number1 = 33;
  printf("%d ", number1);
  printf("%d", number2);

  return 0;
}

Options a. 33 b. 3333 c. 33 33 d. '33.0'

Correct Answer: c