HELP!!! DEV C++ users

not able to compile the simplest code i.e. of hello world
the code is

Code:

---

#include<iostream>
using namespace std;
int main()
{
        cout<<"hello world!!!";
        return 0;
}

---

the error was
collect2.exe: error: ld returned 1 exit status

So what kind of errors are you getting?

What compiler are you trying to use?

When you downloaded the IDE did you also download a compiler?

Jim

i m using DEV C++ editor which comes with MinGW GCC 4.7.2 32-bit compiler
i actually was making a game something like a tournament in which we fight different people and then upgrade ourselves after each fight but its still incomplete
and we can have test run
but when i run it i face only one error i.e.
collect2.exe: error: ld returned 1 exit status
and also when i use borland C++ compiler then i face no errors
then i made a simple program of hello world and i still got same error in DEV C++!!!

Code:

---

#include<iostream>
#include<conio.h>
#include<time.h>
#include<stdlib.h>
#include<stdio.h>
#include<dos.h>
using namespace std;
struct player{
    int health,armour,damage[2],money;
    char name[10];
}p;
struct rat{
    int health,armour,damage[2],money;
}rat1;

int main();
void tutorial();
void options();
void shop();
void quit();
void weapons();
void armour();
void extras();


void start(void)
{
    system("cls");
    cout<<"when you are ready press enter...";
    getch();
   
}
void tutorial(void)
{
    system("cls");
    cout<<"learn how to play this game...\npress any key to continue.";
    getch();
    cout<<"dsfsfw";
}
void options(void)
{
    system("cls");
}
void shop()
{

    back:
    int b=1;
    system("cls");
    cout<<"\nwelcome to the shop";
    cout<<"press...\n (1) to buy weapons\n (2) to buy armour\n (3) to buy extras\n (4) back";
    char a=getch();
    switch(a)
    {
        case '1':weapons();break;
        case '2':armour();break;
        case '3':extras();break;
        case '4':b=0;break;
    }
    if(b)
    {
        system("cls");
        goto back;
    }
}
void weapons()
{
    cout<<"choose...\n(1) light weapons \n(2) medium weapons\n(3) heavy weapons";
    int a;
    cin>>a;
    switch(a)
    {
        case 1:{
           
            cout<<"light weapons press...\n (1) small stick (cost 10 damage : 0-3)\n (2) twig (cost 15 damage : 2-5)\n (3) sharp bamboo spear (cost 20 damage : 5-10)\n (4) rusty sword (cost 30 damage : 10-20)\n (5) iron sword (cost 40 damage : 15-25)";
            cin>>a;
            switch(a)
            {
                case 1:{
                    p.damage[0]=0;
                    p.damage[1]=3;
                    p.money-=10;
                }break;
                case 2:{
                    p.damage[0]=2;
                    p.damage[1]=5;
                    p.money-=15;
                }break;
                case 3:{
                    p.damage[0]=5;
                    p.damage[1]=10;
                    p.money-=20;
                }break;
                case 4:{
                    p.damage[0]=10;
                    p.damage[1]=20;
                    p.money-=30;
                }break;
                case 5:{
                    p.damage[0]=15;
                    p.damage[1]=25;
                    p.money-=40;
                }break;
                case 6:system("cls");break;
            }
        }break;
        case 2:
        {
            cout<<"\nmedium weapons press...\n (1) medium sword (cost 50 damage : 20-30)\n (2) medium iron sword(cost 60 damage : 20-35)\n (3) sharp sword(cost 80 damage : 40-60)\n (4) sharp long sword (cost 100 damage : 50-100)\n (5) double sword(cost 120 damage : 60-100)\n (6) back";
            cin>>a;
            switch(a)
            {
                case 1:{
                    p.damage[0]=20;
                    p.damage[1]=30;
                    p.money-=50;
                }break;
                case 2:{
                    p.damage[0]=20;
                    p.damage[1]=35;
                    p.money-=60;
                }break;
                case 3:{
                    p.damage[0]=40;
                    p.damage[1]=60;
                    p.money-=80;
                }break;
                case 4:{
                    p.damage[0]=50;
                    p.damage[1]=100;
                    p.money-=100;
                }break;
                case 5:{
                    p.damage[0]=60;
                    p.damage[1]=100;
                    p.money-=120;
                }break;
                case 6:system("cls");break;
            }
        }break;
        case 3:
        {
        cout<<"heavy weapons press...\n (12) silver sword (cost 125 damage : 65-100)\n (13) golden sword(cost 150 damage : 80-120)\n (3) diamond tipped sword(cost 180 damage : 100-200)\n (4) diamond sword (cost 200 damage : 150-250)\n (5) the sword of death(cost 300 damage : 500-600)\n (6) back";
        cin>>a;
            switch(a)
            {
                case 1:{
                    p.damage[0]=65;
                    p.damage[1]=100;
                    p.money-=125;
                }break;
                case 2:{
                    p.damage[0]=80;
                    p.damage[1]=120;
                    p.money-=150;
                }break;
                case 3:{
                    p.damage[0]=100;
                    p.damage[1]=200;
                    p.money-=180;
                }break;
                case 4:{
                    p.damage[0]=150;
                    p.damage[1]=250;
                    p.money-=200;
                }break;
                case 5:{
                    p.damage[0]=500;
                    p.damage[1]=600;
                    p.money-=300;
                }break;
                case 6:system("cls");break;
            }
        }break;
    }
}
void quit(void)
{
    system("cls");
}
void back()
{
    system("cls");
}

int main()
{
    system("cls");
    char a;
    cout<<"welcome to 'the tournament'\n";
    cout<<"press...\n (1) to start\n (2) for tutorial\n (3) for options\n (4) to quit";
    a=getch();
    switch(a)
    {
        case '1':start();break;
        case '2':tutorial();break;
        case '3':options();break;
        case '4':quit();break;
    }
    return 0;
}

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Verify: (1) the source file is properly included in the project, and (2) the source file has the correct file extension.

Also what is this?

Code:

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int main();

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The function main() doesn't need a prototype.

Where did you implement your armour() and extras() functions?

Why are you including the <dos.h> header file? It's a "little" outdated and shouldn't really be used with today's modern operating systems.

Also if you're writing a C++ program you should be using the C++ standard headers not their C versions, <cstdio> instead of <stdio.h>. And since you're not actually using anything in these C headers you shouldn't be including them anyway.

Jim

i already explained that this is incomplete executable code fragment also i need these standard library functions because i know only this much and still learning + i feel an ease to use these function
i will use the function delay(double) from the header file dos.h
and about the prototyping of main function i need that in the function ask() where i will ask the user to rerun this code if yes then i'll call the function main()
also i face no errors in borland C++ editor!!!
till i get the solution i'll continue my work in borland C++ editor

Here's some extra punctuation of mine that you can have to make your messages more clear:

......,,,,,,

You shouldn't be calling main from another function. Instead, you should have a loop in main that cycles or breaks based on the return value of "ask()".

As to the problem at hand, did you check the things I mentioned in post #4?

Quote:

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Originally Posted by Mukul Kumar

and about the prototyping of main function i need that in the function ask() where i will ask the user to rerun this code if yes then i'll call the function main()

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It is not permitted to use the global main function in your program. Therefore, you are not allowed to call it. Luckily, there is an alternative: have the main function call the function (possibly indirectly) in a loop instead.

Quote:

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and about the prototyping of main function i need that in the function ask() where i will ask the user to rerun this code if yes then i'll call the function main()

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Since this is a C++ program this doesn't make any sense. In a C++ program main() can't be called by any function, including main(). And even in a C program calling main() is considered a very very bad practice.

Quote:

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i already explained that this is incomplete code fragment

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So then what is your problem? Incomplete code fragments rarely compile if you haven't at least implemented "stub" functions (functions with blank bodies).


Jim

see the problem is ......that i was verifying time and again to check the working of the code properly and suddenly i faced this problem hence i say it is 100% executable(i tried this in turbo C++) and I AM WORKING ON THOSE FUNCTIONS HAVING NOTHING!!!

thanks i will take care of this in future @laserlight,matticus&jimblumberg about that calling of main()

now i may not reply for 20 hrs because this is the time in one day when i sit on computer and work + its 10:23 PM here in my country and i m gonna goto sleep so good-night!!!
i promise i'll work hard on this code:):):)

Quote:

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Originally Posted by Mukul Kumar

and also when i use borland C++ compiler then i face no errors

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Borland C++ and Turbo C++ are both garbage. They do not support the standard C++ language. Don't ever use them.

Quote:

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Originally Posted by Mukul Kumar

Code:

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#include<conio.h>
#include<dos.h>

---

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Don't use these headers, as they are not standard, and almost certainly will not work in Dev C++. this goes for the getch() function as well.

Quote:

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Originally Posted by Mukul Kumar

Code:

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goto back;

---

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Don't use goto. it is incredibly bad practice, and you can use a simple while loop to do what you're trying to do here.

i found the problem its not in my incomplete code,not even in my bad habits it was in my editor my naughty bro disturbed some settings(i don't know which one) and i set everything to default by reinstalling the editor but thanks to all of you for telling me about my bad habits i'll take care :D