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C > Conversions Code Examples

C Program to Convert the given Binary Number into Decimal



C Program to Convert the given Binary Number into Decimal

- Take a binary number and store it in the variable j.
- Initialize the variable decimal_val to zero and variable base to 1.
- Obtain the remainder and quotient of the binary number. Store the remainder in the variable rem and override the variable j with quotient.
- Multiply rem with variable base. Increment the variable decimal_val with this new value.
- Increment the variable base by 2.
- Repeat the steps 3, 4 and 5 with the quotient obtained until quotient becomes zero.
- Print the variable decimal_val as output.

    #include <stdio.h>

    void main()

    {

        int  j, binary_val, decimal_val = 0, base = 1, rem;

        printf("Enter a binary number(1s and 0s) \n");

        scanf("%d", &j); /* maximum five digits */

        binary_val = j;

        while (j > 0)

        {

            rem = j % 10;

            decimal_val = decimal_val + rem * base;

            j = j / 10 ;

            base = base * 2;

        }

        printf("The Binary number is = %d \n", binary_val);

        printf("Its decimal equivalent is = %d \n", decimal_val);

    }

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