How many programming languages do you know?

You ever use CC65 targeting the 6502? WinAVR? The crappy Arduino wrapper for GCC? Give it a try some time... processor targets can wildly change the result.

It's like the difference between "while {}" and "do {} while" where you get the extra check at the start...

Or just that in a C++ compiler you can declare the 0 with the variable declaration at the top, since there are no inline-declarations... one less thing to do. WHILE often needs to check FIRST, and on 8 bit targets they often use a jmp back to the beginning to run the loop again to jump.

Just to show you what I mean, in CC65 this:

void main() {
	unsigned char t;
	for (t=0; t<6; t++) {}
}

Code (markup):

Compiles to:

;
; File generated by cc65 v 2.13.3
;
	.fopt		compiler,"cc65 v 2.13.3"
	.setcpu		"6502"
	.smart		on
	.autoimport	on
	.case		on
	.debuginfo	off
	.importzp	sp, sreg, regsave, regbank, tmp1, ptr1, ptr2
	.macpack	longbranch
	.forceimport	__STARTUP__
	.export		_main

; ---------------------------------------------------------------
; void __near__ main (void)
; ---------------------------------------------------------------

.segment	"CODE"

.proc	_main: near

.segment	"CODE"

	jsr     decsp1
	ldx     #$00
	lda     #$00
	ldy     #$00
	sta     (sp),y
L0003:	ldy     #$00
	ldx     #$00
	lda     (sp),y
	cmp     #$06
	jsr     boolult
	jne     L0005
	jmp     L0004
L0005:	ldy     #$00
	ldx     #$00
	lda     (sp),y
	pha
	clc
	adc     #$01
	ldy     #$00
	sta     (sp),y
	pla
	jmp     L0003
L0004:	jsr     incsp1
	rts

.endproc

Code (markup):

While this:

void main() {
	unsigned char t = 0;
	do {} while (++t < 6);
}

Code (markup):

Compiles to this:

;
; File generated by cc65 v 2.13.3
;
	.fopt		compiler,"cc65 v 2.13.3"
	.setcpu		"6502"
	.smart		on
	.autoimport	on
	.case		on
	.debuginfo	off
	.importzp	sp, sreg, regsave, regbank, tmp1, ptr1, ptr2
	.macpack	longbranch
	.forceimport	__STARTUP__
	.export		_main

; ---------------------------------------------------------------
; void __near__ main (void)
; ---------------------------------------------------------------

.segment	"CODE"

.proc	_main: near

.segment	"CODE"

	lda     #$00
	jsr     pusha
L0004:	ldy     #$00
	ldx     #$00
	clc
	lda     #$01
	adc     (sp),y
	sta     (sp),y
	cmp     #$06
	jsr     boolult
	jne     L0004
	jsr     incsp1
	rts

.endproc

Code (markup):

Common problem with a LOT of compilers. Not as true as it used to be in GCC (as krakjoe already pointed out), at some point they FINALLY decided to fix it (sick of producing the slowest code of any C++ compiler maybe?) but it still persists in a LOT of C and C++ compilers -- particularly on 8 and 16 bit targets.

Get a load of the MESS of compares and jumps in the first one.

 

I see, never been able to compare such a variety of compilers...

 

To answer the OP's question - ALL

 

The most important thing in programming is not quantity but quality.

 

I know only ASP.Net and PHP.

 

Comfortable in around a dozen languages. If I have a choice I'll work in Python. I'd like to get proficient in a functional language.

 

php, css, android, javascript, html, phython, actionscript, c, c++

 

Java and assembly, I know these 2 very well.I also know a lot of andriod development which is xml with java, but it has it's own commands. I have started some web programming too but I am still a beginner (php, javascript). I do feel that learning programming never ends and you really have to do a lot of practice.I hope to continue learning other stuff too.

 

I am pretty confident in JS, HTML5, CSS3 (count those if you wish), PHP, Ruby/RoR. I've touched on Python, and I plan on teaching myself C++ and Java soon.