Help with a simple C++ program

[mikepablo]

For my intro to c++ class I have to create a complete program from broken algorithms
The questions are
(a) Print a random number between -1 and -9 to the output screen:
(b) Print (to the output screen) the sum of the square roots of the numbers 1, 2, 3 , 4, 5 and 6.
c) Ask the user to enter the word ”Hello”. Force the user to keep entering a new word until an input equal to ”Hello” is received.
(d) Print twelve random negative numbers.
(e) Print the largest integer whose square root is less than 1729.

So far I have

a)int r = rand() % 9 + 1;
cout << -r;

b)double sum = 0;
for (int s = 1; s <= 6; s++)
sum += sqrt(s);
cout << sum;

c)string input = "";
while (input != "Hello") {
cout << "Please enter the word ’Hello’: ";
cin >> input;
}

d)for (int n = 1; n <= 12; n++) {
int r = rand();
if (r > 0) r = -r;
cout << r;
}

e)int n = 1;
while (sqrt(n) < 1729) n++;
cout << n - 1;

How can I make a program that incorporates all these algorithms and that flows well. Thanks

[mzimmers]

A good start would be to put each of those code fragments into separate routines, and post the code here.

Please put the code in tags for easier reading, too. Thanks.

[mikepablo]

a)int r = rand() % 9 + 1;
cout << -r;

b)double sum = 0;
for (int s = 1; s <= 6; s++)
sum += sqrt(s);
cout << sum;

c)string input = "";
while (input != "Hello") {
cout << "Please enter the word ’Hello’: ";
cin >> input;
}

d)for (int n = 1; n <= 12; n++) {
int r = rand();
if (r > 0) r = -r;
cout << r;
}

e)int n = 1;
while (sqrt(n) < 1729) n++;
cout << n - 1;

I hope this helps, I just need to make a single program that Incorporates all the codes and that flows well. Thanks for the help.

[mzimmers]

Thanks for putting your code in blocks. What I was looking for, though, was for you to build compilable routines. Using your code, I'd look for something like this:

void randNbr()
{
	int r = rand() % 9 + 1;
	std::cout << -r;
}

Note that for this routine to work, you'll need to include a couple of header files. Can you figure out which ones?

See if you can do your other routines like the example I gave you above.

Once you have all your subordinate routines done, it should be easy to write the main routine and put it all together.

[mikepablo]

Unfortunately I am totally lost, and we are just learning about functions. Since I have many other problems like these I was hoping someone can do this for me and I will use it as a model to solve my other problems. Any help would be appreciated. Thanks.

[raptr_dflo]

If you're learning about functions, then now is the perfect time to start creating some, right? :)

You can put your code fragments all in one program by simply pasting them into the center of:

#include <iostream>
#include <stdlib.h>

int main (int argc, char *argv[])
{
   // program code goes here

   return 0;
}

As far as "flows well", I have no idea what you'd like it to do. That part is entirely up to you. What do -you- mean by "a single program ... that flows well"?

[mzimmers]

Unfortunately I am totally lost, and we are just learning about functions. Since I have many other problems like these I was hoping someone can do this for me and I will use it as a model to solve my other problems.

I gave you a valid example of a function; can you use it as a model to create your other functions? I'm happy to assist, but you need to do most of the work.

[ag_17]

To use all those functions in one program you need to call them in main at different stages (or as you need). You can use conditional statement( if else,switch case) like :

#include <iostream>
void randnmbr();

int main()
{
int x;
cout<<"Enter 1 for printing a random number....";
cout<<"Enter 2 for something else....(so on)";
cin>>x;                //for switching
switch(x)
{
case 1: {...; break;}    // call a function
case 2: {...; break;} 
}
return 0; 
}

void randnmbr()  //definition of the function (refer book for working of a func)   
{
}