Question

How to convert octal number to decimal number in C++

Answer 1

#include <iostream>

int OctalToDecimal(int octal);

int main()
{
	int octal = 753;
	
	std::cout << "Decimal = " << OctalToDecimal(octal) << std::endl;

	return 0;
}

int OctalToDecimal(int octal)
{
	int decimal = 0, i = 0, remainder;

	while (octal != 0)
	{
		remainder = octal % 10;
		octal /= 10;
		decimal += remainder * pow(8, i);
		i++;
	}
	return decimal;
}


/*
run:

Decimal = 491

*/

 

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