Simple C++ program to convert binary decimal number

Simple C++ program to convert binary decimal number
Di Posting Oleh : Simple Learning
Kategori : binary-number convert decimal-number

Cpp Tutorial Contains
  • Binary to Decimal Conversion Code in C++
  • Program Logic Explanation
  • Dry run the code with a simple input so the basic working of program can be understand easily
Concept Used
  • Know the basic math of converting one number to other number e.g BINARY to DECIMAL
  • functions 
  • while loop

Problem Statement
Write a C++ program which asks user to input a binary number then convert it into its equivalent decimal number and show the result. 
To improve readability of program make a separate function and function should return the resultant number.

C++ CODE
Compiler used: C++ codeBlocks Compiler

#include<iostream>
using namespace std;
long
ConvertBinary2Decimal(unsigned long num);
int
main()

{

unsigned long
binary_num, decimal = 0;
cout <<"\n\tEnter a binary number to get
Equivalent Decimal : "
;
cin >> binary_num;
decimal=ConvertBinary2Decimal(binary_num);

cout <<"\n\tDecimal Value Of
"
<<binary_num << " is = " << decimal << endl;
return
0;

}


long
ConvertBinary2Decimal(unsigned long bin_num)
{

unsigned long
decimal = 0;
int
remainder=0, base = 1;


while
(bin_num > 0)

{

remainder = bin_num % 10;
decimal = decimal + remainder * base;
bin_num = bin_num / 10;
base = base * 2;
}


return
decimal;

}

Convert binary to decimal c++ code

Program Explanation
  • In main function user enters input number
  • Calls the function and pass the number 
  • Function calculates the required result and return
  • In main function program displays the final result

Dry Run of Code
Input = 101
--------------------------------
Iteration     = 1
 remainder  = 1
 decimal     = 1
 bin_num   = 10
 base          =  2
--------------------------------
Iteration     = 2
 remainder  = 0
 decimal     = 1
 bin_num   = 1
 base          =  4
--------------------------------
Iteration     = 3
 remainder  = 1 -> as 1 mod 10 =1
 decimal     = 5 -> previous value+remainder*base = 5 RESULT
 bin_num   =  0
 base          =  8
--------------------------------

Main logic of the program in while loop take another input and dry run it into a notebook. Best of Luck

See another example here

0 Response to "Simple C++ program to convert binary decimal number"

Post a Comment