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[C]A simple calc

 
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DeletedUser14087
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Joined: 21 Jun 2006
Posts: 3069
PostPosted: Sat Mar 22, 2008 4:06 am    Post subject: [C]A simple calc Reply with quote
it only do the following:
+
-
/
*

2 numbers

i didn't invest much time on it, i could of make it do more numbers and shit.

for those who loves C, there's a tiny bug, try fixing it.

when you 5/2 it doesn't show 2.5, only 2

Code:
#include "windows.h" //uses windows;
#include "stdio.h"

//i really don't know what's the diff between scan/printf to scan/printf_s
//i'm using it just for the sake of the warnings i get @ compile

void main();

//**********Main Functions**********\\

int Add(int fNumber,int sNumber)
{
   return fNumber+sNumber;
}

int Sub(int fNumber,int sNumber)
{
   return fNumber-sNumber;
}

int Mul(int fNumber, int sNumber) //function Mul(fNumber,sNumber:integer):integer;
{ //begin
   return fNumber*sNumber; //result:=fNumber*sNumber;
} //end;

int Div(int fNumber, int sNumber)
{
   return fNumber/sNumber;
}

//**********Main Functions**********\\

void DoAnother() //Thanks to irwin for helping me fix the instant close problem and the %c
{
   //bool TF;
   char lol,sc;

   //TF = true;   

   printf("Would you like to try another number ?\n");
   printf("Y = Yes, N = No...\n\n"); //WriteLn('Y = Yes, N = No...');

   /*while(TF == true)
   {
         if(GetAsyncKeyState(0x59)) //59 = Y
         {
            main();
            TF = false;
         }
         else if(GetAsyncKeyState(0x4E)) // 4E = N
         {
            ExitProcess(0);
         }
   }*/
   
   scanf_s("%c",&sc); //MSVC++ 2k8 warned me to use scanf_s

   lol = getchar();

   switch(lol)
   {
   case 'Y': case 'y':
      main();
      break;
   case 'N': case 'n':
      ExitProcess(0);
   default:
      printf("\nThere's no such option\n\n");
      DoAnother();
      break;
   }   
}

void main()
{
   int a,b,sum,Choice;
   DWORD ms=50;

   printf("Insert First Number:");
   scanf_s("%d",&a); //MSVC++ 2k8 warned me to use scanf_s
   printf("Insert Second Number:");
   scanf_s("%d",&b); //MSVC++ 2k8 warned me to use scanf_s

   printf("\nWhat would you like to to ?\n");
   printf("1:Substracte\n");
   printf("2:Addition\n");
   printf("3:Multiply\n");
   printf("4:Devide\n");
   scanf_s("%d",&Choice); //MSVC++ 2k8 warned me to use scanf_s
   
   /*if(Choice == 2)
   {
          sum = Add(a,b);
           printf("the sum of %d + %d is %d\n\n",a,b,sum);

           Sleep(ms);
           DoAnother();
   }
   else if(Choice == 1)
   {
      sum = Sub(a,b);
      printf("the sum of %d + %d is %d\n\n",a,b,sum);

      Sleep(ms);
      DoAnother();
   }
   else if((Choice > 2 || 1) || (Choice < 2 || 1))
   {
      printf_s("There's no such option\n\n");
      main();
   }*/

   switch(Choice)
   {
   case 1:
      sum = Sub(a,b);
      printf("The sum of %d - %d is %d\n\n",a,b,sum);

      Sleep(ms);
      DoAnother();
      break;
   case 2:
      sum = Add(a,b);
       printf("The sum of %d + %d is %d\n\n",a,b,sum);

       Sleep(ms);
       DoAnother();
       break;
   case 3:
      sum = Mul(a,b);
      printf("The sum of %d * %d is %d\n\n",a,b,sum);

      Sleep(ms);
      DoAnother();
      break;
   case 4:
      sum = Div(a,b);
      printf("The sum of %d / %d is %d\n\n",a,b,sum);

      Sleep(ms);
      DoAnother();
      break;
   default:
      printf("There's no such option\n\n");
      main();
      break;
   }
}
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Estx
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Joined: 04 Mar 2008
Posts: 172
PostPosted: Sat Mar 22, 2008 5:02 am    Post subject: Reply with quote
To fix the bug, change int to a double. Don't forget to modify precision where needed.

Oh, divide and subtract have typo's lol. Just pointing it out Very Happy
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Anden100
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PostPosted: Sat Mar 22, 2008 5:24 am    Post subject: Re: [C]A simple calc Reply with quote
Rot1 wrote:
for those who loves C, there's a tiny bug, try fixing it.

when you 5/2 it doesn't show 2.5, only 2


well... i wouldnt call that a "bug"... its just because, integer values is always rounded...
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lurc
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Posts: 1900
PostPosted: Sat Mar 22, 2008 9:40 am    Post subject: Reply with quote
The _s's at the end are simply their for CRT security enhancements to prevent buffer overflows, etc.

if you looked it up you would of found that out in about 30 seconds...
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spectrum
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PostPosted: Sat Mar 22, 2008 10:22 am    Post subject: Reply with quote
It gives me an error, it says:"main must return int".
_________________
C++ {||||||||||}
ASM {||||||||||}
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DeletedUser14087
I post too much
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PostPosted: Sat Mar 22, 2008 11:34 am    Post subject: Re: [C]A simple calc Reply with quote
Anden100 wrote:
Rot1 wrote:
for those who loves C, there's a tiny bug, try fixing it.

when you 5/2 it doesn't show 2.5, only 2


well... i wouldnt call that a "bug"... its just because, integer values is always rounded...


i acutally made the function float but it still didn't work, i got tired from trying.

spectrum wrote:
It gives me an error, it says:"main must return int".


idk about you, but i'm using MSVC++ 2008 Express Edition (Registered) and it compiles.
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hcavolsdsadgadsg
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PostPosted: Sat Mar 22, 2008 2:06 pm    Post subject: Reply with quote
spectrum wrote:
It gives me an error, it says:"main must return int".


Whatever compiler you're using is nice enough to complain about void main

You should be using int main
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DoomsDay
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PostPosted: Sun Mar 23, 2008 1:02 am    Post subject: Reply with quote
:P
Code:
@echo off
title Calc

:start
cls
echo ===============
echo Enter argument:
set /p arg=
set /a arg=%arg%
echo 
echo Result: %arg%
echo ===============
pause > nul
goto start
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hcavolsdsadgadsg
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PostPosted: Sun Mar 23, 2008 1:28 am    Post subject: Reply with quote
x0r wrote:
slovach wrote:
Whatever compiler you're using is nice enough to complain about void main

You should be using int main

http://forum.cheatengine.org/viewtopic.php?p=2205775#2205775


Sure you can do it, but why go against the standard?
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hcavolsdsadgadsg
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PostPosted: Sun Mar 23, 2008 1:41 am    Post subject: Reply with quote
No worries, I'm always interested in more information to sponge up.

Though main has always returned int, if I remember right? (once upon a C story, there was no void)

e: whoops minor typo
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