Difference Between Compiler and Interpreter in Programming

A knowledge of the distinction between compiler and interpreter architectures is important for developers to select the appropriate toolchain and identify performance bottlenecks. The main difference between compiler and interpreter execution is revealed in the timing and manner of translating the source code to machine instructions. Before running, a C source file is translated by a compiler, like GCC or clang, which performs preprocessing, lexical analysis, parsing, optimization, and code generation to create a standalone native binary. An interpreter, on the other hand, interprets source statements or intermediate bytecode one line at a time at run time, sacrificing raw speed of execution and ahead-of-time type safety for immediate feedback during interaction.

Difference Between Compiler and Interpreter: Execution, Speed & Diagnostics — Technical Overview

A knowledge of the distinction between compiler and interpreter architectures is important for developers to select the appropriate toolchain and identify performance bottlenecks. The main difference between compiler and interpreter execution is revealed in the timing and manner of translating the source code to machine instructions. Before running, a C source file is translated by a compiler, like GCC or clang, which performs preprocessing, lexical analysis, parsing, optimization, and code generation to create a standalone native binary. An interpreter, on the other hand, interprets source statements or intermediate bytecode one line at a time at run time, sacrificing raw speed of execution and ahead-of-time type safety for immediate feedback during interaction.

#include <stdio.h>

int main(void) {
    printf("Compiled with GCC (__VERSION__ = %s)\n", __VERSION__);
    printf("Ahead-of-time compilation produces a standalone native binary.\n");
    return 0;
}

#include <stdio.h>

int main(void) {
    printf("Compiled with GCC (__VERSION__ = %s)\n", __VERSION__);
    printf("Ahead-of-time compilation produces a standalone native binary.\n");
    return 0;
}

Compiled with GCC (__VERSION__ = 13.3.0)
Ahead-of-time compilation produces a standalone native binary.