// Workshop 1:
// Version: 1.0
// Date: 2021/05/21
// Author: Fardad Soleimanloo
// Description:
// This file tests the DIY section of your workshop
///////////////////////////////////////////////////
#include <iostream>
// #include "cstring.h"
// using namespace sdds;
using namespace std;

void strCpy(char* des, const char* src);
void strnCpy(char* des, const char* src, int len);
int main()
{
   char str1[80] = "abcdefghijklmnopqrstuvwxyz";
   char str2[80];
   const char *fadd;
   strCpy(str2, str1);
   cout << str2 << endl;
   strnCpy(str2, "@@@", 2);
   cout << str2 << endl;
//    strnCpy(str2, "@@@", 3);
//    cout << str2 << endl;
//    strnCpy(str2, "@@@", 4);
//    cout << str2 << endl;
//    cout << strCmp("aab", "aaa") << endl;
//    cout << strnCmp("aab", "aaa", 2) << endl;
//    cout << strnCmp("aab", "aaa", 3) << endl;
//    cout << strLen("") << endl;
//    cout << strLen(str1) << endl;
//    fadd = strStr(str1, "jkl");
//    cout << fadd << endl;
//    fadd = strStr(str1, "bbb");
//    if (!fadd)
//       cout << "Not found" << endl;
//    strCpy(str2, "John ");
//    strCat(str2, "Doe");
//    cout << str2 << endl;
   return 0;
}
void strCpy(char *des, const char *src)
{
   int i = 0;
   for (i = 0; src[i] != '\0'; ++i)
   {
      // copying the characters by
      // character to str2 from str1
      des[i] = src[i];
   }
   des[i] = '\0';
}

void strnCpy(char* des, const char* src, int len)
{
   int i = 0;
   for (i = 0; src[i] != '\0'; ++i)
   {
      // copying the characters by
      // character to str2 from str1
      for ( i = 0; i < len; i++)
      {
        des[i] = src[i];
      }
      
      
      
       for ( int x = 2; x < 26; i++)
      {
        for (char c = 'a'; c <= 'z'; c++)
      {
             des[x] = c;
      }
      }
      

      
      // des[i] = src[i];
   }
   
   des[i] = '\0';

}
by

C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}