4.Write a C program to demonstrate the declaration and initialization of variables of different data types.

#include <stdio.h>
int main()
{
 int a = 5; // declare and initialize integer variable a to 5
 float pi = 3.14; // Declare and initialize float variable pi to 3.14
 char ch = 'A'; // variable ch is declared as Character variable and initialised to ‘A’
 double dbl = 5.6789; // variable dbl is declared as double and initialised
 // show the values of the variables
 printf("\n Integer variable value:= %d", a);
  printf("\n Float variable value:= %.2f ", pi);
  printf("\n Character variable value:= %c ", ch);
 printf("\n Double variable value:= %.4f ", dbl);
 return 0;
}
Output:
Integer variable value:=5
Float variable value:=3.14
Character variable value:=A
Double variable value:=5.6789