Try to figure out how to use while but something went WRONG

Question

I use cppDroid

#include <iostream>
using namespace std;

int num = 0;
while (num < 20) {

cout << "Number: " << num <<
endl;
num++;
}

The output is
/buildSources/while.cpp:5:1: error:expected
unqualified_id before 'while'
while (num < 20){
^
Return code is not 0

Can someone help me?

Answer 1

// So it's true that we need to do everything here huh.

#include <iostream>
using namespace std;

int main() {
int num = 0;
while (num < 20) {

cout << "Number: " << num++ << endl;
}
}

Answer 2

Your main function is missing.

Answer 3

really thankful for spending time on my question,can't be more appreciate

Answer 4

thank you guys,i will give it a try

Answer 5

silencer 45

Or you might consider a reverse solution besides your original approach as

//...
int main() {
int num = 20;
while (num--)
cout << num << endl;
}

Output :
19
18
.
.
.
1
0

Answer 6

I guess that's because you forgot int main()

Answer 7

sorry guys,but nope

Answer 8

i tried int main() and down below is
int num = 0;

only int main()
and pops out
except initializer before while