Run Turbo C Programs Online Without DOSBox
Turbo C was released by Borland in 1990 and quickly became the defining C programming environment for MS-DOS. Even today, decades later, it is still taught extensively across Indian engineering colleges, BCA, MCA, and polytechnic diploma curriculums (including universities like AKTU, VTU, SPPU, Mumbai University, and Anna University). Laboratory assignments and textbooks still prescribe Turbo C-specific functions like clrscr() and getch().
However, running genuine Turbo C today requires third-party emulators like DOSBox. DOSBox is slow, difficult to install, suffers from mouse integration and resolution issues, and is frequently blocked by IT administrator policies on college lab PCs. MyCollegeLab solves this by providing a clean, modern web-based runner that compiles your legacy Turbo C code instantly in the cloud without requiring DOSBox or any local installation.
conio.h Functions Supported by MyCollegeLab
conio.h compatibility header that is automatically included with every C/C++ compilation.| Function | Behavior in MyCollegeLab |
|---|---|
| clrscr() | Clears terminal output (ANSI escape sequence) |
| getch() | Reads a single character from stdin buffer |
| getche() | Reads a character with echo |
| kbhit() | Returns 0 (safe no-op in browser context) |
| gotoxy(x,y) | ANSI terminal cursor positioning |
| textcolor() | Safe no-op (color output not applicable) |
| textbackground() | Safe no-op |
| void main() | Accepted by compiler (treated as int main) |
Classic Turbo C Programs That Work Here
#include <stdio.h>
#include <conio.h>
void main() {
int i, j, n;
clrscr();
printf("Enter number of rows: ");
scanf("%d", &n);
for (i = 1; i <= n; i++) {
for (j = 1; j <= i; j++)
printf("* ");
printf("\n");
}
getch();
}▶ Click "Launch C Compiler Free" and paste this code to run it.
#include <stdio.h>
#include <conio.h>
void main() {
float a, b;
char op;
clrscr();
printf("Enter: num op num (e.g. 5 + 3): ");
scanf("%f %c %f", &a, &op, &b);
if (op == '+') printf("Result: %.2f", a + b);
else if (op == '-') printf("Result: %.2f", a - b);
else if (op == '*') printf("Result: %.2f", a * b);
else if (op == '/') printf("Result: %.2f", a / b);
getch();
}▶ Click "Launch C Compiler Free" and paste this code to run it.
#include <stdio.h>
#include <conio.h>
void main() {
int n, i;
long fact = 1;
clrscr();
printf("Enter a number: ");
scanf("%d", &n);
for (i = 1; i <= n; i++)
fact *= i;
printf("%d! = %ld\n", n, fact);
getch();
}▶ Click "Launch C Compiler Free" and paste this code to run it.
Why Not Use Real Turbo C Anymore?
Turbo C is a 16-bit DOS application from 1991. It cannot run on modern 64-bit Windows without DOSBox or virtual machines.
Turbo C requires admin rights to install — something students on locked college PCs or public lab computers simply don't have.
MyCollegeLab runs modern GCC 12 with a built-in conio.h stub that transparently handles all the legacy functions your syllabus requires.
No download, no installation, no account. Open your browser, write code, hit Run — results appear in under 5 seconds.
Turbo C Compiler — Frequently Asked Questions
Is MyCollegeLab exactly the same as Turbo C?
No — Turbo C uses an ancient 16-bit compiler from the DOS era. We use modern GCC 12.2 on Ubuntu Linux. However, we provide an automatic compatibility layer for <conio.h>, clrscr(), and getch(), allowing your university syllabus code to run smoothly on modern 64-bit hardware.
Does gotoxy and textcolor work?
gotoxy(x, y) uses ANSI cursor positioning sequences in the terminal. textcolor() and textbackground() are implemented as safe no-ops in web terminal environments so your programs compile and run without errors.
Can I use this for AKTU / VTU / SPPU C practicals?
Yes, all conio.h-based programs from common university syllabi (such as AKTU, VTU, SPPU, Anna University, and State Technical Boards) run correctly without modifications.
What if my program needs #include <graphics.h>?
BGI graphics (<graphics.h>) is not supported — it requires a real 16-bit Turbo C runtime and direct DOS hardware video interrupts. For visual drawing assignments, we suggest using our Web Studio tab where you can write HTML5 Canvas code with JavaScript.