C++ Tutorials - Absolute n00b spoonfeed

Make a loop that prints "Hello world" 24 times - in 10 different ways! make sure you have at least one for loop, one while loop, and one do {} while loop.

I don't have access to a comp. with a compiler at the moment, but i could probably think up a few ways to do that.

1) using the

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for (x=1;x<25;x++)
{ cout << "helloworld";}

method.

3) doing

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while (x++<25)
{ cout << "helloworld";}

method

4) making the main function just have one cout << "hello world"; section in it, and also include a x=x++ somewhere in it. Make it send you to another function, say "hello world" there, then have it send you back.

using if/else branching, you could add in a

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if (x>12)
{do something involving ending the program}

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5) the obvious "write 'hello kitty' 24 times" method

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6) you could make 24 strings that all mean "hello kitty" then just print them all to the screen.

thats all i could think up at the moment.... getting tired

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I had an idea to make a loop that would print out "Hello world!" 24 times, and each time it will add another exclamation mark at the end.

[code]
#include <iostream>

int main()
{
char x = '!';
for ( int t = 0; t < 25; t++ )
{
std::cout << "Hello world" << x * t << std::endl;
}
}
[/code]

But when it runs instead of seeing exclamation marks after "Hello world" I see the result of t multiplied by 33. Is 33 the ASCII value of '!' ?

the * operator is mathematical, not something that will execute code a given amount of times (like print ! some number of times etc)

to make something happen multiple times, you need...... a loop! so you prolly want to do this;

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for ( int t = 0; t <= 24; t++ )
{
     std::cout << "Hello world";
     for(int x = 0; x <= t; x++) cout << "!";
     cout << endl;
}

Of course! Why didn't I think of just adding another loop. :P

What about the do - while - loop?

[code]#include <iostream>

void main()
{
int i = 1;
do
{
printf("Hello World\n");
i++;
}while( i < 25);
system("PAUSE");
}[/code]

hm why is your bbcode off?

try to uncheck the "disable bbcode" box at the bottom of your posts

as per your question, going back on this threads topic (!), you can do any loopy stuff in any of for/while/do-while loops. its just for convenience that the language has these different loops for common situations which suit a for() better or a do-while() better but they can all do the exact same stuff. which is precisely what this practice snippet's purpose was about; for you to code same stuff using different loops. like

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for (int a = 1; a <= 24; a++) cout << "hello world";

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int x =1;
while (x <= 24)
{
    cout << "hello world";
    x++;
}

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int x =1;
do {
    cout << "hello world";
    x++;
} while (x <= 24);

do the same exact thing in 3 different ways. sorry Doctor Salt, i said "using loops" specifically so no functions or string tricks...

here's the loop snippets i wanted someone to come up with. the above 3 loops, plus the following seven (or any variation of them cuz there arent only 10);

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for (int x = 1; x <= 24; x++, cout << "hello world") ;

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int x =1;
for (;;)
{
    cout << "hello world";
    x++;
    if (x > 24) break;
}

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int x=0;
for (; x++ <= 24;) cout << "hello world";

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int x=1;
while (x++ <= 24) cout << "hello world";


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int x =1;
while (true)
{
    cout << "hello world";
    x++;
    if (x > 24) break;
}

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int x =24;
while (x--) cout << "hello world";


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int x=0;
do {
cout << "hello world";
} while (++x <= 24);

and many many more variations.

go ahead and come up with more variations (or find mistakes in mine )

Here is one more variant:

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int main() {short i=0; begin: if (i++ < 24) {cout << "Hello world\n"; goto begin;}}


Kind of manual loop :D

Yea

not to mention "goto" is strongly avoided

here this isint what you asked but i was bored and made it anyways you chose how many times to loop and what word to loop im not sure how to add stuf tho id love to understand that if there a short explanation to adding lets say a "!" at the end every time it loops hmmm...

p.s i seem to have my bbcode off sometimes helpppp xD

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#include <iostream>
#include <string>
using namespace std;

int main()
{
    string whatToWrite;
    int howManyTimes;
    cout << "ok lets spam a word! :) so type how many time we should spam word" << endl;
        cin>>howManyTimes;
            cout<<"ok now what word you wana spam?: ";
                cin>>whatToWrite;
    for (int limit = 0; limit < howManyTimes  ; ++limit )
    {

     cout<< whatToWrite ;

    }

    return 0;
}


Not exactly what you asked for, but I thought I would give switches a try for some fun and practice along with the loops

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int main()
{
    srand((unsigned)time(0));
    int rand_num; /* Used for random output switch */
    int n = 1; /* Number of times executed */
    while (n <= 24)
    {
        for( int index = 1; index < 25; index++ )
        {
        rand_num = (rand()%10)+1;
        }
        switch (rand_num) /* Make the output random */
        {

            case 1 :
            cout << "Hello World!\n";
            break;

            case 2 :
            cout << "Hello World!!\n";
            break;

            case 3 :
            cout << "Hello World!!!\n";
            break;

            case 4 :
            cout << "Hello World!?!\n";
            break;

            case 5 :
            cout << "Hello0o World!\n";
            break;

            case 6 :
            cout << "H3ll0w W0rld!\n";
            break;

            case 7 :
            cout << "Hello World!?!?!\n";
            break;

            case 8 :
            cout << "Hello World!@!!\n";
            break;

            case 9 :
            cout << "Hello World!$!$\n";
            break;

            case 10:
            cout << "Hello World?\n";
            break;

            default:
            cout << "Something has gone wrong./nPlease double check the source code and try again.\n";
            break;
        }
        n++;
    }
    cin.get();
    return 0;

}


**NOTE: BBCode isn't working for me, and it's enabled...

I seriously recommend to you to use for and not a while. It kinda better for that kind of application.

This is a practice loop thread to practice different ways to use loops with no real point. So they may seem a poor way of using them but that is how you learn to use them right