Double and Char - C Programs

Double in C

Example:

#include <stdio.h>
int main()
{
   double num = 10.5;
   printf("The value of num is : %lf \n", num);
   return 0;
}

Output:

The value of num is : 10.500000 

Explanation:

In C programming, a double variable is used to represent floating-point numbers, which can have decimal points. double is a data type that is used to represent double-precision floating-point numbers. To declare a variable as double, we write double before the variable name.

In the example above, we declared a double variable num with the value of 10.5. We used the format specifier %lf to print the value of the num variable.

Char in C

Example:

#include<stdio.h>
int main()
{
    char c = 'A';
    printf("The character is %c", c); 
    return 0;
}

Output:

The character is A

Explanation:

In C programming, the char data type is used to represent a single character. It is always enclosed in single quotes. To declare a variable as char, we write char before the variable name.

In the example above, we declared a char variable c with the value 'A'. We used the format specifier %c to print the value of the c variable.

Use

Double and Char data types are used extensively in C programming. Double is used in scientific calculations, financial calculations, and graphics. Char is used to store ASCII values of characters, as well as in decision-making statements.

Summary

• Double is used to represent floating-point numbers.
• Char is used to represent a single character.
• Double is declared as double before the variable name.
• Char is declared as char before the variable name.
• Double and Char are extensively used in C programming for various operations.