C/C++ :: How To Make A Shape Outside Of Main Function

Sep 8, 2014

I know how to define a shape (here, a rectangle) and attach it to a window in C++ as follows:

#include <Simple_window.h>
void cir() { Circle c(Point(100,100),50); }
int main() {
Simple_window win(Point(100,100),600,400, "test");
Rectangle r(Point(100,100),Point(300,200));
win.attach(r);
win.wait_for_botton();
}

But how to define a shape (say a circle by that cir() function which is) outside of the main() function? And how to attach it on the window win to be visible?

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C++ :: How To Make A Shape Outside Of Main Function

Sep 8, 2014

I know how to define a shape and attach it to a window as follows:

#include <Simple_window.h>
void cir() { Circle c(Point(100,100),50); }
int main() {
Simple_window win(Point(100,100),600,400, "test");

Rectangle r(Point(100,100),Point(300,200));
win.attach(r);
win.wait_for_botton();
}

But how to define a shape (say a circle by that cir() function which is) outside of the main() function? And how to attach it to be visible on window win?

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Visual C++ :: How To Make A Shape Outside Of Main Function

Sep 9, 2014

I know how to define a shape (here, a rectangle) and attach it to a window in C++ as follows:

Code:
#include <Simple_window.h>
void cir() { Circle c(Point(100,100),50); }
int main() {
Simple_window win(Point(100,100),600,400, "test");

[Code] ....

But how to define a shape (say a circle by that cir() function which is) outside of the main() function that is how to create a circle inside of the cir() function and it returns that circle when I called it in my main() function so that I can attach it on the window win to be visible?

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C++ :: Keyboard Function That Is Called In Main Function To Make Shape Move

Jan 19, 2013

Ok so I am working on a game and I'm in the process of developing my Player class. Anyways, what I have is a keyboard function that is called in my main function to make a shape move.

void myKeyboardFunction(unsigned char key, int x, int y) {
switch ( key ) {

[Code].....

But when I try to call it, trying to copy my previous method,

glutKeyboardFunc(Player1.playerControls);

I get an error

error C3867: 'Player::playerControls': function call missing argument list; use '&Player::playerControls' to create a pointer to member

I get an error saying it can't convert parameters. I would just like to understand why the arguments become a problem when I make the function a member of my class, when the first method I used is so easy.

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C :: How To Make Main Function Only Allowed To Declare Variables And Functions

Mar 6, 2015

So I need to make a main function have no if/for/etc. statements so I need to move it to another function and call it in main. The problem is that it's a command line argument function so I'm confused on how it works. Here's an example:

Code:

#include <stdio.h>
int main(int argc, char* argv[])
{
printf("The program name %s", argv[0]);
if (argc == 2) {
printf("Argument supplied is %s", argv[1]); }
else if (argc > 2) {
printf("Too many arguments");}
else {
printf("One argument");}
}

How can i make this into two functions with main only declaring variables and calling other functions?

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C# :: For Loops To Make User Defined V Shape Output

Jul 29, 2014

Write a program to ask a user to input a symbol from the keyboard and to output that symbol in a n X n/2 sized V where n = the width of the V. You must use a loop to process the data

I am stuck at trying to figure out how to do the actual output formatting. This is where I am sitting currently.

string character = "";
int vheight = 0;
Console.WriteLine("Enter the character you wish to use for your V: ");

[Code]....

so Im really just a bit stumped on how to get the actual V shape to be formatted..

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C :: Main Function Does Not Return Any Values When Calling Other Function?

Jun 9, 2013

The function is supposed to return value from the file in my main, but I am getting empty value. I am trying to get better with pointer. Right now just teaching myself.

right now the only way for this code to show value is when in put the putchar(*ps) inside my readfile function. I would like to readfile to return value and print in the main function.

Code:

#include <stdio.h>
char *readfile(char filename[]);
int main(int argc, char *argv[] ) {

[Code].....

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C :: How To Pass Main Function Argument To Some Other Function

Dec 26, 2014

I am writing a program in which a Fucntion has to be wriiten to parse the Command Line . When I include Code for parsing in main fuction iteslf ,its run ok . But I want to make a fucntion of that code and call it from main ,than it show Segmentation error .

By using Debugging I found Some thing is mess with " -m" Parameter of Command line , But Cant Rectify it ..

Code:
int main (int argc, char *argv[]){
//get_parameter_value(argc,argv);
// buffer[packet_size+1]= char ("'");
while (argc > 1) {
if (argv[h][0] == '-')

[Code] .....

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C/C++ :: How To Get Formation From Pointer Function To Main Function

Feb 13, 2014

int example (int [], int, *int,*int,*int,*int);
int main () {
My code will be here
example (int array[], int size, &a,&b,&c,&d); // Like this??? I try it didnt work

[Code] ....

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C++ :: Pass From Function To Main

Apr 24, 2014

Why the value does not return; Here is code

#include <iostream>
#include <string>
#include <ctime> // to use the time function
#include <cstdlib>
using namespace std;
int getUserChoose (int);

[Code] ....

here is the output

Welcome to the program of Rock, Paper, Scissors
The computer is ready to play the game
Are you ready to play the game
Y for yes and N for no
Y
R = Rock; P = Paper; S = Scissors
R
You have choose Rock
1TN
1RM
0U
0C

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C/C++ :: Is It Necessary Function Main Should Return Int?

Jan 24, 2013

If so what is the reason, and the returning int value indicates wat?

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C++ :: Call Of Non-function In Function Main

Feb 16, 2013

I am getting call of nonfunction in function main <> error and 's' is assigned a value that is never used in the function warning...

#include <iostream>
#include <cmath>
#include <iomanip>
using namespace std;
int main() {
float a,b,c,s,area;

[Code] ....

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C++ :: Possible To Change Value Of Variable In Main Using A Function?

Jan 30, 2014

I'm currently writing a poker game and am trying my best to avoid using global variables. I have a few variables in int main() which i was hoping to use to store the value of each players hand. I then created a function which calculates the value of the hand but cannot get this value back into the main function.

For example:

Code:
#include <iostream>
using namespace std;
void getValue(int value) {
value = 4;

[Code] ....

Is there any way i can get the value of value using this function? If not what can I do?

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C :: Passing A String To A Function From Main?

Mar 30, 2014

i would like to know if i need to dynamically allocate a string in main before passing it to a function that i have created.

in that function i just read the string and do not change any chat in it.

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C :: Passing Variable From Outside Function To Main?

Nov 8, 2013

This code is for a program that allows you to play a guessing game or arithmetic game and shows your total score from both as you go along. The program works fine the only problem I'm having is with the score. Is there a way to call the score value from the outside function into main?

Code:
#include <stdio.h>
#include <time.h>
#include <stdlib.h>
//prototype functions
void menu();

[Code] .....

So trying to pass the value of score from the outer function int guessGame() into the score print statement in choice 3 of the main function? Oh and the "17 -turn_count" was just part of the requirements of the assignment.

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C :: How To Print Out Recursive Function In Main

Feb 9, 2013

I am just practicing some recursion and I am having trouble with printing out a recursive function in main. Here is what I have:

Code:

// This function adds the squares 4, 5 = 4*4 + 5*5 recursiveley
int recursive_sumSquares(int m, int n) {
if (m < n) {
return m*m + recursive_SumSquares(m+1, n);
}
else {
return m*m;

[Code]...

I am getting an error that says undefined reference to 'recursive_SumSquares'

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Aug 17, 2013

I have i want to call a function with two results for example x = 1 and y = 2.How do i return this function in c and how do i call such a function in the main program.

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Sep 17, 2013

I don't exactly know how to test my ==friend function in my main.

Here is my .h file:

#include<iostream>
using namespace std;
class Car{
public:
Car();
Car(int yer, string mke);

[Code] ....

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Feb 25, 2013

Get user input should be done in a function. The function should read the product number, price per unit, and quantity sold and return them to the main().

Display the value of product number, price per unit and quantyty sold in main().

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Mar 5, 2014

I have simple LCd_call function . I am calling this function from main . I wanted to call this function once. problem i am facing here, When lcd_call function being called. It enter the cases but instead of staying paricular case it coming back and starting case 1 iteslf . for every 6s it change the case to 1:

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C/C++ :: Expression Syntax In Function Main

Sep 11, 2012

i wrote a program on implementation of stacks using functions (data structures )...but i got expression syntax error in function main.....

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C/C++ :: Lvalue Required For Function Main

Sep 5, 2014

I actually am wanting to practice on a 2 dimension char array. so, I am using the below program and getting the error - Lvalue Required For Function Main

#include <stdio.h>
#include <conio.h>
#include <string.h>
char varStringArray[1][5];
int main(void) {
clrscr();
varStringArray[0] = 'a';
printf("%c", varStringArray[0]);
return 0;
}

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C :: Return A String To Then Call It On Main Function?

May 26, 2013

I'm trying to return a string to then call it on main function.

Code:
const char* coiso(int chave){
char str [50];
sprintf(str,"%d",chave);
char txt[50] = ".txt";
strcat(str,txt);
return str;
}
int main () {
const char* info = coiso(8);
printf("%s",info);
}

If I do a printf("%s",str) in coiso function it works but the following code doesn't work.

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C :: Return Value From User Defined Function To Main

Nov 14, 2014

I want to return value from user defined function to main.

Code:

#include <stdio.h>
int mult ( int x, int y );
int add(int x, int y);
int loop (int y);
int main() {

[Code] ......

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C++ :: Pointer Function - Getting Information Back To Main

Feb 6, 2014

I am trying to make a information to pointer function but the problem is how/what number am i putting in for *a...

And can i get that information back to main? and is that right way to split the array in to ? because i have will 200 random number and I need to find the smallest and second smallest element in array.

two_smallest (print, size3,size3,size3,size3);
} void two_smallest (int find_array[] , int size3, int *a, int *a2, int *b,int *b2) {
for (int index = 0; index <= 100; index ++) {
if (find_array[index] < find_array [0]) {
find_array[0] = find_array [index];
*a = find_array[0];

[Code] ....

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C++ :: How To Return Multiple Values To The Main Function

Oct 13, 2013

in a function how do you return multiple values to the main function.

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