My C Journey

This is almost all my C/C++ files that I've worked on while in university.

There are several types of folder.

• First type is the online judges folder prefixed by OJ_ . These are the online judges I've used to practice my problem solving.
• Second type is the folders I've used for my own practice and bug fixes, these are the Tests, Tricks, Learn folders
• Third type is the outside code folders, these are the folders that have mostly codes that I didn't write. Like: External, Programming Contest Book, Remember_solution etc
• The next type is the contest, seasons types, These are the periodic solutions that I needed to do from time to time.

Things to revise for every language the terms I use here is c++ specific

• Convert string to int/double, convert int/double to string
• Vector/list's declare, size, push/append, how to empty, insert at any position, is double linked or single.
• Stack's size, is empty, clear, push, pop, top
• how to declare long long
• how to do foreach loop
• How to make a single character to string

Things to revise in general

• How to do merge sort by hand

C#

Stack<int> stackOfNumbers = new Stack<int>();
stackOfNumbers.Push(50);
stackOfNumbers.Pop();
stackOfNumbers.Peek();
stackOfNumbers.Count;
stackOfNumbers.Clear();

var queue = new Queue<int>();
queue.Enqueue(52);
queue.Dequeue();
queue.Peek();
var size = queue.Count;
queue.Clear();

// string to int
int.Parse(str)
double.Parse(str)

// Length of array
var arr = new string[]{"H", "e", "l"};
arr.Length

C++

// convert array to vector
int x[3] = {1, 2, 3};
vector<int> v(x, x + sizeof x / sizeof x[0]);

// string to int,long, long long
stoi("50")
stol("50")
stoll("50")
stof("50")
stod("50")
stold("50")

atoi
atol
atoll

// int, doule to string
int i=50, d=50.5;
i.to_string()
d.to_string()

How to setup environment

C++

• Install C/C++ extension >> ms-vscode.cpptools
• Go to a .cpp file and on the top left select the down arrow on the RHS of the play buttno and select Run File
• If a configuration panel is shown, select the C++ option.

This will add a tasks.json file in the .vscode folder .vscode/tasks.json

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: c++.exe build active file",
            "command": "c:/Program Files/CodeBlocks/MinGW/bin/c++.exe",
            "args": [
                "-fdiagnostics-color=always",
                "-g",
                "${file}",
                "-o",
                "${fileDirname}\\${fileBasenameNoExtension}.exe"
            ],
            "options": {
                "cwd": "c:/Program Files/CodeBlocks/MinGW/bin"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

.vscode/launch.json

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "C/C++: c++.exe build and debug active file",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}\\${fileBasenameNoExtension}.exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "c:/Program Files/CodeBlocks/MinGW/bin",
            "environment": [],
            "externalConsole": false,
            "MIMode": "gdb",
            "miDebuggerPath": "c:\\Program Files\\CodeBlocks\\MinGW\\bin\\gdb.exe",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                },
                {
                    "description": "Set Disassembly Flavor to Intel",
                    "text": "-gdb-set disassembly-flavor intel",
                    "ignoreFailures": true
                }
            ],
            "preLaunchTask": "C/C++: c++.exe build active file"
        }
    ]
}

Javascript setup

• install node .vscode/launch.json file

{
    "name": "Run JS",
    "program": "${fileDirname}\\${fileBasenameNoExtension}.js",
    "request": "launch",
    "skipFiles": [
        "<node_internals>/**"
    ],
    "type": "node"
}

Typescript setup

• install node
• install ts-node using npm install -g ts-node .vscode/launch.json file

{
    "name": "Run TypeScript",
    "type": "node",
    "request": "launch",
    "runtimeExecutable": "ts-node",
    "program": "${fileDirname}\\${fileBasenameNoExtension}.ts"
}

Run C# file

csc test.cs & test.exe