Topics Discussed: Functions, Function prototyping, returns, scope
Topics Discussed: Homework
Tag Archive for Functions
C++ Tutorial #23 — Functions and function prototyping
C++ Tutorial #24 — Functions, return types, pass by value, pass by reference
Topics Discussed: Function return types, pass by value / reference.
Category: Tutorials /
Tags: Functions, Pass By Reference, Pass By Value, pbr, pvr, return types, Tutorials, Tutorials
C++ Tutorial #25 — Pass by value / reference. Using functions with cout
Topics Discussed:Passing variables by value / function
25-B
Topics Discussed: Homework
Category: Tutorials /
Tags: Cout, Functions, Pass By Reference, Pass By Value, return types, Tutorials, void functions
Bughunt 8- Functions
Difficulty: Easy
Time to solve: 1-2 min
Video this is covered in: 1-25
#include <iostream>
using namespace std;
void addition(int, int);
int main(){
cout << "Enter number 1: ";
int x=0;
cin >> x;
cout << "Enter number 2: ";
int y=0;
cin >> y;
cout << addition(x,y);
return 0;
}
void addition(int x, int y){
return x+y;
}
Error MessageYATesting.cpp: In function `int main()’:
YATesting.cpp:17: error: no match for ‘operator<<' in 'std::cout << addition(x, y)'
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:63: note: candidates are: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ostream<_CharT, _Traits>&(*)(std::basic_ostream<_CharT, _Traits>&)) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:74: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_ios<_CharT, _Traits>&(*)(std::basic_ios<_CharT, _Traits>&)) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:86: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::ios_base&(*)(std::ios_base&)) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:121: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:155: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long unsigned int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:98: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(bool) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:178: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:189: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(short unsigned int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:193: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:204: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(unsigned int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:179: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long long int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:214: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long long unsigned int) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:238: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(double) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:219: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(float) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:261: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(long double) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:284: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(const void*) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:307: note: std::basic_ostream<_CharT, _Traits>& std::basic_ostream<_CharT, _Traits>::operator<<(std::basic_streambuf<_CharT, _Traits>*) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:449: note: std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, char) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:505: note: std::basic_ostream
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:460: note: std::basic_ostream
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:465: note: std::basic_ostream
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:567: note: std::basic_ostream<_CharT, _Traits>& std::operator<<(std::basic_ostream<_CharT, _Traits>&, const char*) [with _CharT = char, _Traits = std::char_traits
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/bits/ostream.tcc:612: note: std::basic_ostream
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:499: note: std::basic_ostream
/usr/lib/gcc/i686-pc-cygwin/3.4.4/include/c++/ostream:504: note: std::basic_ostream
YATesting.cpp: In function `void addition(int, int)’:
Programming Challenge #1 — Primes
Code difficulty: 3/10
Math difficulty: 4/10
In his challenge I ask that you do the following things:
Create a program that will:
- Allow a user to input a number
- Allow the user to see if the number is prime or not
- If the number is not prime, tell the user what number it is divisible by
- Use a function to process whether or not the value is prime (this idea will be used in a future challenge
- Use double or Long for increased number length
Concepts used: Functions, variables, loops, arithmatic functions, breaks, boolean
You should be able to do this by: Lesson 33
My solution: http://ideone.com/AKmCm (spoilers- Don’t look unless you are really stuck!)
Please note that my solutions are not checked thoroughly, and should only be used for reference. They are often non-optimal solutions that could be improved upon (by you!). I keep these intentionally rough for just that reason.
Category: Programming Challenges /
Tags: bool, boolean, breaks, challenge, dual, dual prime, factors, Functions, iteration, loops, prime, Programming challenges
Programming Challenge #2 – Dual Primes
Code difficulty: 4/10
Math difficulty: 4/10
Before we begin here: Q. What is a dual prime?
A. A dual prime is 2 prime numbers that are exactly “2″ apart. Example: 3, 5 // 11,13, etc.
In his challenge I ask that you do the following things:
Create a program that will:
- Allow a user to input a number to iterate up to
- Allow the user to see all the dual primes, and a list of the numbers that are NOT dual prime
- Use either a vector or a list and their inherent member functions to handle the data from the loop
Concepts used: Functions, variables, loops, arithmatic functions, breaks, boolean, vectors (or lists), template class member functions
You should be able to do this by: Lesson 44
My solution: http://ideone.com/Y7wiJ (spoilers- Don’t look unless you are really stuck!)
Please note that my solutions are not checked thoroughly, and should only be used for reference. They are often non-optimal solutions that could be improved upon (by you!). I keep these intentionally rough for just that reason.
Category: Programming Challenges /
Tags: bool, boolean, breaks, challenge, dual, dual prime, factors, Functions, iteration, loops, prime, Programming challenges
