cpp "no output" [solved]

Question

#include <iostream>
using namespace std;

int dec(int binary){
int sum=0;
if(binary%10==1){
sum++;
}
int temp=1;
while(binary>1){
temp*=2;
if(binary%10==1){
sum+=temp;
binary/=10;
}
}
return sum;
};
int main() {
int binary;
cin>>binary;
cout<<binary;
cout<<dec(binary);
return 0;
}

Answer 1

Okay I found the problem, it's inside the `dec` function.

1. temp *= 2; should be done after the `if` block, not before.

2. binary /= 10; should be after the `if` block, not inside it.

int dec(int binary)
{
int sum = 0;
int temp = 1;
while (binary)
{
if (binary % 10 == 1)
{
sum += temp;
}
binary /= 10;
temp *= 2;
}
return sum;
};

Answer 2

I think your code working infinite times check your conditions properly

#include <iostream>
using namespace std;
int dec(int binary )
{

int num = binary;
int dec_value=0 ;
int base = 1;
int temp = num;

while (temp) {
int last_digit = temp % 10;
temp = temp / 10;
dec_value += last_digit * base;
base = base * 2;
}

return dec_value;
}
int main()
{

int binary;
cin>>binary;
cout << dec(binary) << endl;
}

Answer 3

What input to test with, and how is the expected output?

Answer 4

the input are in the binary int in the main and then
there cout (output) of the binary and there function that
does output

Answer 5

I mean give me example, a number for input. And also what output is expected by that number as input ...

Answer 6

input 100 (binary)
output 4 (decimal)

Answer 7

Okay, let me check your code.
I'll be back ...

Answer 8

grate job👏
please upvote the question 🙏