Code Visualizer | C/C++

Visualizing C Code with DOT Notation

This document illustrates the structure of C code using DOT notation, detailing functions for string manipulation and word counting while showcasing the flow of execution through visual representation.

Prompt

#include 

void strip_string(char* str, int max_len)
{
    int count = 0;
    while (*str++ != '\0' && count++ < max_len);

    if (count > 1) {
        str -= 2;
        if (*str == '\n')
            *str = '\0';
    }
}

int main(void)
{
    char str[100];
    fgets(str, sizeof(str), stdin);
    strip_string(str, sizeof(str));

    int count = 0, j, flag;
    for (int i = 0; i < 100; i++) {
        flag = 0;
        if (str[i] != ' ') {
            flag = 1;
            j = i;
            while (str[j] != ' ') j++;
            i = j;
        }
        if (flag == 1) count++;
    }
    printf("%d", count);

    return 0;
}

Answer

Code Visualization in DOT Notation

This document provides a visual representation of the provided C code's structure and relationships using DOT notation. The code includes functions for string manipulation and counting non-space words in user input.

Code Overview

Key Components

Includes: #include <stdio.h>
Functions:
- strip_string(char* str, int max_len)
- main(void)
Variables:
- char str[100]
- int count, j, flag

Flow of Execution

The program starts at main.
User input is read into a string.
The string is processed to strip trailing newlines.
Non-space word count is performed.

DOT Notation Representation

digraph G {
    rankdir=LR;

    node [shape=box];

    // Nodes
    A [label="main()"];
    B [label="strip_string(char* str, int max_len)"];
    C [label="fgets(str, sizeof(str), stdin)"];
    D [label="strip_string(str, sizeof(str))"];
    E [label="Word Counting Loop"];
    F [label="printf(\"%d\", count)"];
    G [label="return 0"];

    // Connections
    A -> C;
    A -> D;
    A -> E;
    E -> F;
    E -> G;
    A -> B [style=dashed]; // indicating function definition
}

Explanation of DOT Structure

Graph Orientation:
- The graph is oriented from left to right (LR), representing the flow from main to its operations.
Nodes:
- Each node represents a function or significant operation within the main function.
Connections:
- Solid arrows depict the actual flow of execution.
- Dotted lines indicate function calls.

Summary

The provided code efficiently reads input, manipulates the string to strip newlines, and counts the number of words. The visualization highlights the main function's flow and relationships between the different operations. For deeper insights and advanced techniques, consider exploring resources available on the Enterprise DNA Platform.