{{fbdoc item="title" value="Comparison of C/C++ and FreeBASIC"}}----

<<**""C/C++""**>><<**""FreeBASIC""**>>

{{fbdoc item="subsect" value="variable declaration"}}
<<##int a;
int a, b, c;##>><<##dim a as integer
dim as integer a, b, c##>>

{{fbdoc item="subsect" value="uninitialized variable"}}
<<##int a;##>><<##dim a as integer = any##>>

{{fbdoc item="subsect" value="zero-initialized variable"}}
<<##int a = 0;##>><<##dim a as integer##>>

{{fbdoc item="subsect" value="initialized variable"}}
<<##int a = 123;##>><<##dim a as integer = 123##>>

{{fbdoc item="subsect" value="array"}}
<<##int a[4];
a[0] = 1;##>><<##dim a(0 to 3) as integer
a(0) = 1##>>

{{fbdoc item="subsect" value="pointer"}}
<<##int a;
int *p;
p = &a;
*p = 123;>><<##dim a as integer
dim p as integer ptr
p = @a
*p = 123>>

{{fbdoc item="subsect" value="structure, user-defined type"}}
<<##struct UDT {
	int myfield;
}##>><<##type UDT
	myfield as integer
end type##>>

{{fbdoc item="subsect" value="typedef, type alias"}}
<<##typedef int myint;##>><<##type myint as integer##>>

{{fbdoc item="subsect" value="struct pointer"}}
<<##struct UDT x;
struct UDT *p;
p = &x;
p->myfield = 123;##>><<##dim x as UDT
dim p as UDT ptr
p = @x
p->myfield = 123##>>

{{fbdoc item="subsect" value="function declaration"}}
<<##int foo( void );##>><<##declare function foo( ) as integer##>>

{{fbdoc item="subsect" value="function body"}}
<<##int foo( void ) {
	return 123;
}##>><<##function foo( ) as integer
	return 123
end function##>>

{{fbdoc item="subsect" value="sub declaration"}}
<<##void foo( void );##>><<##declare sub foo( )##>>

{{fbdoc item="subsect" value="sub body"}}
<<##void foo( void ) {
}##>><<##sub foo( )
end sub##>>

{{fbdoc item="subsect" value="byval parameters"}}
<<##void foo( int param );
foo( a );##>><<##declare sub foo( byval param as integer )
foo( a );##>>

{{fbdoc item="subsect" value="byref parameters"}}
<<##void foo( int *param );
foo( &a );

void foo( int& param );
foo( a );##>><<##declare sub foo( byref param as integer )
foo( a )



##>>

{{fbdoc item="subsect" value="statement separator"}}
<<##;##

>><<##:##
end-of-line>>

{{fbdoc item="subsect" value="for loop"}}
<<##for (int i = 0; i < 10; ""i++"") {
	...
}##>><<##for i as integer = 0 to 9
	...
next##>>

{{fbdoc item="subsect" value="while loop"}}
<<##while (condition) {
	...
}##>><<##while condition
	...
wend##>>

{{fbdoc item="subsect" value="do-while loop"}}
<<##do {
	...
} while (condition);##>><<##do
	...
loop while condition##>>

{{fbdoc item="subsect" value="if block"}}
<<##if (condition) {
	...
} else if (condition) {
	...
} else {
	...
}##>><<##if condition then
	...
elseif condition then
	...
else
	...
end if##>>

{{fbdoc item="subsect" value="switch, select"}}
<<##switch (a) {
case 1:
	...
	break;
case 2:
case 3:
	...
	break;
default:
	...
	break;
}##>><<##select case a
case 1
	...


case 2, 3
	...

case else
	...

end select##>>

{{fbdoc item="subsect" value="string literals, zstrings"}}
<<##char *s = "Hello!";
char s[] = "Hello!";##>><<##dim s as zstring ptr = @"Hello!"
dim s as zstring * 6+1 = "Hello!"##>>

{{fbdoc item="subsect" value="hello world"}}
<<###include <stdio.h>
int main() {
	printf("Hello!\n");
	return 0;
}##>><<##print "Hello!"




##>>

{{fbdoc item="subsect" value="comments"}}
<<##""// foo""
/* foo */##>><<##' foo
/' foo '/##>>

{{fbdoc item="subsect" value="compile-time checks"}}
<<###if //a//##
###elif //b//##
###else##
###endif##>><<###if //a//##
###elseif //b//##
###else##
###endif##>>

{{fbdoc item="subsect" value="compile-time target system checks"}}
<<###ifdef _WIN32##>><<###ifdef ""__FB_WIN32__""##>>

{{fbdoc item="subsect" value="module/header file names"}}
<<##foo.c, foo.h##>><<##foo.bas, foo.bi##>>

{{fbdoc item="subsect" value="typical compiler command to create an executable"}}
<<##gcc foo.c -o foo##>><<##fbc foo.bas##>>

{{fbdoc item="back" value="DocToc|Table of Contents"}}