Remove punctuation marks from a string Dry Run in C

Remove punctuation marks from a string is an interactive C dry run visualizer from the String Functions 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.

Remove punctuation marks from a string Program Code

#include <stdio.h>
#include <string.h>
#include <ctype.h>

int isPunctuation(char ch) {
    return (ch == '.' || ch == ',' || ch == '!' || ch == '?' || 
            ch == ';' || ch == ':' || ch == '"' || ch == '\'' ||
            ch == '(' || ch == ')' || ch == '[' || ch == ']' ||
            ch == '{' || ch == '}' || ch == '@' || ch == '#' ||
            ch == '$' || ch == '%' || ch == '^' || ch == '&' ||
            ch == '*' || ch == '-' || ch == '_' || ch == '+' ||
            ch == '=' || ch == '|' || ch == '\\' || ch == '/');
}

int main() {
    char str[] = "Hello, World! How are you? (C Programming)";
    int j = 0;
    
    printf("Original: %s\n", str);
    
    for(int i = 0; str[i] != '\0'; i++) {
        if(!isPunctuation(str[i])) {
            str[j++] = str[i];
        }
    }
    str[j] = '\0';
    
    printf("Without punctuation: %s\n", str);
    return 0;
}

View the complete String Functions programs page.