Variable Declaration using Different Types of Data

We know the how to declare variable. We saw some example in my previous post. Here we will discuss about how to declare different types of data.

Data Type	Variable Declaration	Initializing	Declaration & Initializing
int	int A;	A = 12345;	int A = 12345;
long long	long long b;	b = 123456789;	long long b = 123456789;
float	float c;	c = 45.123456;	float c = 45.123456;
double	double D;	D = 33.123456789;	double D = 33.123456789;
char	char ch;	ch = 'k';	char ch = 'k';

Let's look into the following code

#include <stdio.h>

int main() 
{
      // variable declaration
      int variable1;
      long long variable2;
      float variable3;
      double variable4;
      char variable5;
 
      // initializing
      variable1 = 5;
      variable2 = 123456;
      variable3 = 454.123456789;
      variable4 = 34.123456789;
      variable5 = 'A';
            
     // printing 
      printf("%d\n",variable1);
      printf("%lld\n",variable2);
      printf("%f\n",variable3);
      printf("%lf\n",variable4);
      printf("%c\n",variable5);
 
 return 0;
}

NOTE

• or are format specifier.
• is used for creating newline. if you run the above program you will find each of those output in different line.

Previous Topic

Next topic