For loop

[colognem]

i want to create a program that displays this exact numbers:
10
109
1098
10987

i want to see the code for this for me to understand loop. i just can't figure out how it is done.

[vlad from moscow]

It is done the following way

10

10 9

10 98

10 987

So all what you need to do is in fact to display

9
98
987

[vlad from moscow]

The straitforward approach is for example

for ( size_t i = 0; i < 4; i++ )
{
	std::cout << 10;
	for ( size_t j = 9; j > 9 - i; j-- ) std::cout << j;
	std::cout << std::endl;
}

There are many ways to do the task. For example

std::string s( "10" );

for ( size_t i = 10; i != 6; s += char( --i + '0' ) ) 
{
	std::cout << s << std::endl;
}

[Jaybob66]

This is it in its most basic form.

for (size_t nMin=10; nMin>0; nMin--)
{
    for (size_t nNum=10; nNum>=nMin; nNum--)
    {
        std::cout << nNum;
    }
    std::cout << std::endl;
}

[gobiking]

i typed up a guide for loops that breaks down the concepts and each type with example codes. iIf you would like me to email it to you just pm me your email.

[vlad from moscow]

Enjoy!:)

#include <iostream>

int main()
{
	while ( true )
	{
		std::cout << "Enter a non-negative number (0 - exit): ";

		size_t n;
		std::cin >> n;

		if ( !n ) break;

		std::cout << std::endl;

		for ( size_t i = 0; i < n; i++ )
		{
			const size_t base = 10;

			size_t j = 0;
			do
			{
				std::cout << base - j % base;
			} while ( j++ != i );
			std::cout << std::endl;
		}
	}
}

[colognem]

the straightforward approach youve stated is what im looking for. thanks :D