﻿ C : Convert binary number into a decimal using math function

# C Exercises: Convert a binary number into a decimal using math function

## C For Loop: Exercise-46 with Solution

Write a C program to convert a binary number into a decimal number using the math function.

visual Presentation: Sample Solution:

C Code:

``````#include <stdio.h> // Include the standard input/output header file.
#include <math.h>  // Include the math functions header file.

void main()
{
int n1, n; // Declare variables to store input and results.
int dec = 0, i = 0, j, d; // Initialize variables for decimal conversion.

printf("\n\nConvert Binary to Decimal:\n "); // Print a message.
printf("-------------------------\n"); // Print a separator.

printf("Input the binary number:"); // Prompt the user for input.
scanf("%d", &n); // Read the binary number from the user.
n1 = n; // Store the original binary number for display.

// Loop to convert binary to decimal.
while (n != 0)
{
d = n % 10; // Get the rightmost digit of the binary number.
dec = dec + d * pow(2, i); // Convert and accumulate the decimal value.
n = n / 10; // Remove the rightmost digit from the binary number.
i++; // Increment the position counter.
}

// Print the result.
printf("\nThe Binary Number: %d\nThe equivalent Decimal Number is: %d\n\n", n1, dec);
}
```
```

Sample Output:

```Convert Binary to Decimal:
-------------------------
Input  the binary number :1010100

The Binary Number : 1010100
The equivalent Decimal  Number is : 84
```

Flowchart: C Programming Code Editor:

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