Binary to decimal conversion in C Language

 In C language, you can convert a binary number to decimal using the following steps:

1. Read the binary number as a string or an integer.
2. Initialize a decimal variable to 0.
3. Set a variable 'base' to 1, which will be used to calculate the decimal equivalent of each binary digit.
4. Starting from the rightmost digit, extract each digit of the binary number and multiply it with the base.
5. Add the result of the multiplication to the decimal variable.
6. Multiply the base by 2 and repeat steps 4 to 6 for each digit of the binary number, moving from right to left.
7. The final value of the decimal variable will be the decimal equivalent of the binary number.

Here is an example program that converts a binary number to decimal:

csharp
#include <stdio.h>

int main() {
    int binary, decimal = 0, base = 1, rem;
    
    printf("Enter a binary number: ");
    scanf("%d", &binary);
    
    while (binary > 0) {
        rem = binary % 10;
        decimal += rem * base;
        base *= 2;
        binary /= 10;
    }
    
    printf("Decimal equivalent: %d", decimal);
    
    return 0;
}

In this program, the binary number is read from the user using the scanf() function. The while loop extracts each digit of the binary number and calculates its decimal equivalent using the rem * base expression. The value of base is updated for each digit to reflect its position in the binary number. Finally, the decimal equivalent is printed using the printf() function.