// - Let's Learn C++ - Rademaker Robin - Edited on 16/02/2019 - // - Learning about Functions - #include using namespace std; // a simple Function // with Function textPrint it's way easyer to print out text void textPrint(string text){ cout << text << "\n\n"; } // Function declaration - used for more complex functions // Function gender check // for definition see below main void genderTest(string gender); // Function Calculate // definition is written outside main (){} // see below void calculate(int num1,char x,int num2); int main() { textPrint("This is the first line of this test" "\nBut we can also add a second line," "\ntext needs to be between double quotations" "\nOur 4th line is just for closure"); // if we use the above function again we can do someting different with it textPrint("I wan't to print text too"); // Let's call out function genderTest // genderTest("animal"); // genderTest("female"); genderTest("male"); // insert 2 lines textPrint(""); // Function calculate // Choose division / , multiply *, subtract - and add + calculate(15,'/',5); calculate(15,'*',5); calculate(15,'-',5); calculate(15,'+',5); return 0; } // More extended functions are defined here to improve readability // Function gender check // Function definition void genderTest(string gender){ if(gender == "male"){ cout << "Y are a " << gender << "\n\n"; } if(gender == "female"){ cout << "Y are a " << gender << "\n\n"; } if(gender != "female" && gender != "male" ){ cout << "Y are are not human" << "\n\n"; } } // Function calculate // This function is able to do calculations void calculate(int num1,char x,int num2){ int result; if(num2 == 0){ cout << "Division by zero not possible!"; } else{ if(x == '/'){ cout << "Result Division: " << (result = num1 / num2) << "\n\n"; } if(x == '*'){ cout << "Result Multiply: " << (result = num1 * num2) << "\n\n"; } if(x == '-'){ cout << "Result Subtract: " << (result = num1 - num2) << "\n\n"; } if(x == '+'){ cout << "Result Addition: " << (result = num1 + num2) << "\n\n"; } } }

Cpp - Lets learn Cpp - Functions