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Our online compiler provides all the necessary tools for efficient work with C code
Work with the latest C language features and use modern syntax.
Instant code highlighting makes reading and debugging easier and more visual.
Support for standard input for testing programs. Enter data for your program through the STDIN field on the I/O tab during execution.
Get informative messages about problems in your code for quick error fixing.
Full support for the C language standard library for working with files, memory, math functions, and more.
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Students
The perfect tool for completing programming assignments. No need to install a development environment on your computer — start programming right away.
Teachers
Demonstrate code examples during classes without setting up a local development environment. Quickly check students' solutions online.
Developers
Quickly test code snippets and algorithms without the distraction of setting up an environment. Ideal for experiments and debugging small programs.
Learn the language through practical examples and use them in your projects
#include <stdio.h>
int main() {
printf("Hello, world!\n");
return 0;
}
Hello, World!
The classic example program for displaying a greeting on the screen.
#include <stdio.h>
int main() {
double a, b;
char op;
printf("Enter an expression: ");
scanf("%lf %c %lf", &a, &op, &b);
switch(op) {
case '+':
printf("%lf\n", a + b);
break;
case '-':
printf("%lf\n", a - b);
break;
case '*':
printf("%lf\n", a * b);
break;
case '/':
if (b != 0)
printf("%lf\n", a / b);
else
printf("Error: division by zero\n");
break;
default:
printf("Error: unknown operation\n");
}
return 0;
}
Simple Calculator
A program for performing basic arithmetic operations.
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