3-data-types.md

C Data Types

Video Link: https://youtu.be/sARaqR0hRI4 Tutorial Link: https://www.programiz.com/c-programming/c-data-types

Data Type: int

#include <stdio.h>

int main() {

  int age = 10;
  printf("%d", age);
  
  return 0;
}

Output

10

---

Print variables and values together

#include <stdio.h>

int main() {

  int age = 10;
  printf("Age = %d", number);
  
  return 0;
}

Output

Age = 10

---

Data Type: double and float

#include <stdio.h>

int main() {

  double number = 12.45;
  printf("%lf", number);
  
  return 0;
}

Output

12.450000

Print formatted double output

#include <stdio.h>

int main() {

  double number = 12.45;
  printf("%.2lf", number);
  
  return 0;
}

Output

12.45

---

Print float and double

#include <stdio.h>

int main() {

  double number = 12.45;
  float number1 = 10.9f;

  printf("%.2lf", number);
  printf("\n%f", number1);  

  return 0;
}

Output

12.45
10.900000

---

Print formatted double and float type

#include <stdio.h>

int main() {

  double number = 12.45;
  float number1 = 10.9f;

  printf("%.2lf", number);
  printf("\n%.1f", number1);  

  return 0;
}

Output

12.45
10.9

---

double with exponential number

#include <stdio.h>

int main() {
  
  double number = 5.5e6;
  printf("%lf", number);
  
  return 0;
}

Output

5500000.000000

---

Data Type: char

#include <stdio.h>

int main() {

  char character = 'z';
  printf("%c", character);

  return 0;
}

Output

z

---

Print numeric value of characters

#include <stdio.h>

int main() {

  char character = 'z';
  printf("%c", character);
  printf("  %d", character);

  return 0;
}

Output

z  122

---

sizeof() Data Types

#include <stdio.h>

int main() {

  int age;
  double number;

  printf("int size = %zu", sizeof (age));
  printf("\ndouble size = %zu", sizeof(number));

  return 0;
}

Output

int size = 4
double size = 8

---

Programiz Quiz

Q. What is the output of the following code?

#include <stdio.h>

int main() {
  int a = 5;
  float a = 9.3;
  
  printf("%d", a);
}

Options

• a. 5
• b. 9.3
• c. 14.3
• d. Error

Answer d