+- Hack Forums (https://hackforums.net)
+-- Forum: Tech (https://hackforums.net/forumdisplay.php?fid=444)
+--- Forum: Coding (https://hackforums.net/forumdisplay.php?fid=151)
+---- Forum: Software Development (https://hackforums.net/forumdisplay.php?fid=118)
+---- Thread: [C] print numbers with loop side by side (/showthread.php?tid=4754184)
print numbers with loop side by side - telmo_d - Mar 30, 2015
I have too create an output similar to this for input 5.
15
24
33
42
51
I have the code below but its just printing me this:
5
1
2
3
4
5
I don't understand why. Why is that?
Code
#include <stdio.h>
#include <stdlib.h>
int main()
{
int x, y, z;
printf("Introduce a number: \n");
scanf("%d", &z);
for (x=1;x<=z;x++)
{
printf("%d\n", x);
for (int y=z;y<=0;y--)
{
printf(" %d\n", y);
}
}* - TheComet - Mar 30, 2015
A much easier solution:
PHP Code
<?php
#include <stdio.h>
int main()
{
int x, y;
printf("Introduce a number: \n");
scanf(" %d", &x);
y = 1;
while(x)
{
printf("%d%d\n", y++, x--);
}
return 0;
}
* - telmo_d - Mar 30, 2015
(Mar 30, 2015 05:48 AM)TheComet Wrote: A much easier solution:
PHP Code
<?php
#include <stdio.h>
int main()
{
int x, y;
printf("Introduce a number: \n");
scanf(" %d", &x);
y = 1;
while(x)
{
printf("%d%d\n", y++, x--);
}
return 0;
}
That's a nice solution. I have to really think all my options next time but i've been reading nested for loops and decided to aplly that, clearly i have trouble with them.
Could you change the code to make it work? I can't see what's wrng.
* - TheComet - Mar 30, 2015
Quote:i've been reading nested for loops and decided to aplly that
It's not a nested loop problem. You cannot solve this using nested loops, because the output of nested loops would be n^2, but you only have n outputs.
* - Sights101 - Mar 30, 2015
You could do a two variable for loop if its easier for you to visualize...
Code
#include <iostream>
using namespace std;
int main() {
int x;
cout << "Input a number" << endl;
cin >> x;
for (int i = 1, j = x; i <= x; ++i, --j) {
cout << i << j << endl;
}
}* - 0xDEAD10CC - Mar 30, 2015
I don't know why you guys are making this so difficult... Anyone notice that the values are increments of 9? lol! 🤝
Here, a good mathematical way to solve this:
Code
int input = 9;
for (int i = 0, x = input + 10; i < input; ++i, x += 9)
{
printf("%d\n", x);
}Works for 1 >= input <= 9.. I wouldn't know what kind of output you'd expect if input was 0... Perhaps just "0"? or "00"? (Your example starts at 1 however)... Or if input was greater than 9.