c++ - ' ' was not declared in this scope -


i'm new , can't understand meaning of "not declared in scope" error. tried declaring these functions , using "" show function did not compile , run. here errors:

in function 'int main()':

[error] 'random' not declared in scope

[error] 'sound' not declared in scope

[error] 'delay' not declared in scope

[error] 'nosound' not declared in scope

[error] 'blink' not declared in scope

[error] 'textattr' not declared in scope

#include<stdio.h>  #include<iostream>  #include<dos.h>  #include<conio.h>  #include<stdlib.h>  using namespace std; int main () {     int count=50;     while(count--)     {     sound(90*random(10));     delay(100);     nosound();     textattr(random("16")+'a'+blink);     cprintf("kshitij");     } }

looks have turbo c++ code in 1990's. last version of turbo c++ released before standardized c++, it's missing stuff , other stuff oddly. contains large bundle of own libraries can't found anywhere else. it's hard find decent support these days you're noticing.

' ' not declared in scope

is compiler saying, "this name has not been defined." it's prompt you've missed header. in case have right headers, don't contain these turbo c++-only functions. means need find alternatives supported modern compilers.

random can replaced std::uniform_int_distribution

sound(90*random(10)); delay(100); nosound();

can replaced the win32 call beep

textattr , cprintf you're better off without. blink pain in posterior re-implement in gcc. there might win32 call this, i've never tried , @ loss.


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