invalid operands of types `<unknown type>' and `int' to binary `operator<<'

 

and i have this in the program.

 

//Simple Adding

#include <iostream>

using namespace std;

int main ()
{
   
    int a; 
    int b; 
    int c; 
    int d;
    int result;
    
    
    
    a = a + d - c + b;
    b = 13;
    c = 15;
    d = 225;
    result = a + 2;
    
    count << result;
    
    return 0;
    
}

this is the part that gets high lighted and is what the error is directed to

  count << result;

i do not under stand this error can you help?

invalid operands of types `<unknown type>' and `int' to binary `operator<<'

 

and i have this in the program.

 

//Simple Adding

#include <iostream>

using namespace std;

int main ()
{
   
    int a; 
    int b; 
    int c; 
    int d;
    int result;
    
    
    
    a = a + d - c + b;
    b = 13;
    c = 15;
    d = 225;
    result = a + 2;
    
    cou[u]n[/u]t << result;
    
    return 0;
    
}

this is the part that gets high lighted and is what the error is directed to

  cou[u]n[/u]t << result;

i do not under stand this error can you help?

 

it's cout not count

secondly your addition is going to give you funny answers ;)

oh yeha im a dumbass! :facesj: how would i have the window stay open long enough for me to read the number?

A simple solution to get it to pause after running it is: cin.get();

A simple solution to get it to pause after running it is: cin.get();

 

getch();

 

system ( "pause" );

 

GetAsyncKeyState ( VK_END );

 

etc.

Don't use system pause, wait for input

 

 

 

     cout << result << "\n";
    cout << "Exit? y/n\n";
cin >> wait; 

{
   if (wait == "yes");
   return 0;
}
    
    
}

 

 

#include <iostream>

using namespace std;

int main ()
{
   
    int a; 
    int b; 
    int c; 
    int d;
    int result;
string wait;
    
    
    
    a = a + d - c + b;
    b = 13;
    c = 15;
    d = 225;
    result = a + 2;
    
    cout << result << "\n";
    cout << "Goodbye\n";
cin >> wait; 

    
    
}

 

 

I haven't done c++ for ages but it should be all good :D

just to correct you... if you put /n in " " then it would say /n and it wouldnt make a new line. but if you put /n it would make a new line. again i know you havent in ages but it neede corrected :)

Don't use system pause, wait for input

 

 

 

     cout << result << "\n";
    cout << "Exit? y/n\n";
cin >> wait; 

{
   if (wait == "yes");
   return 0;
}
    
    
}

 

 

#include <iostream>

using namespace std;

int main ()
{
   
    int a; 
    int b; 
    int c; 
    int d;
    int result;
string wait;
    
    
    
    a = a + d - c + b;
    b = 13;
    c = 15;
    d = 225;
    result = a + 2;
    
    cout << result << "\n";
    cout << "Exit? y/n\n";
cin >> wait; 

{
   if (wait == "yes");
   return 0;
}
    
    
}

 

 

I haven't done c++ for ages but it should be all good :D

 

lewl... I can tell you never did get far into C++. Because system ( "pause" ); delays execution until a key press is detected. Using STL is great in applications but adds unnecessary bloat to the project size and is slower than regular C code.

 

for example...

char *szStr = ( char* )malloc ( 32 ); // you could use STL, but C code is faster and is smaller.

scanf ( "%s", &szStr );

if ( !stricmp ( szStr, "yes" ) )
{
    free ( szStr ); 

    return 0;
}

http://www.gidnetwork.com/b-61.html

 

* It's not portable. This works only on systems that have the PAUSE command at the system level, like DOS or Windows. But not Linux and most others...

* It's a very expensive and resource heavy function call. It's like using a bulldozer to open your front door. It works, but the key is cleaner, easier, cheaper. What system() does is

o suspend your program

o call the operating system

o open an operating system shell (relaunches the O/S in a sub-process)

o the O/S must now find the PAUSE command

o allocate the memory to execute the command

o execute the command and wait for a keystroke

o deallocate the memory

o exit the OS

o resume your program

There are much cleaner ways included in the language itself that make all this unnessesary.

* You must include a header you probably don't need: stdlib.h or cstdlib

http://www.gidnetwork.com/b-61.html

 

does it really matter for a small application? If your that concerned with memory usage you should be coding in C and Assembly.