Unary Operators (-, ++, --, !, &, sizeof) Dry Run in C

Unary Operators (-, ++, --, !, &, sizeof) is an interactive C dry run visualizer from the Input Output programs section. Study the source code, then use the execution controls to follow each step, variable update, highlighted line, and console output.

This page provides a browser-based dry run with source-code highlighting, auto-scroll, voice narration controls, and execution output for learning the program step by step.

Unary Operators (-, ++, --, !, &, sizeof) Program Code

#include <stdio.h>
int main() {
    int a = 10;
    _Bool b = 0;
    
    a = -a;
    printf("\nUnary Minus = %d", a);

    a = 10;
    printf("\nPost Increment = %d", a++);

    a = 10;
    printf("\nPre Increment = %d", ++a);

    a = 10;
    printf("\nPost Decrement = %d", a--);

    a = 10;
    printf("\nPre Decrement = %d", --a);

    printf("\nNegation = %d", !b);
    printf("\nsizeof(a) = %lu", sizeof(a));
    
    return 0;
}

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