ECE
ECE 1574 Week 9 Function Anatomy.docx

ECE 1574 Week 9 Function Anatomy.docx - ECE1574 Problem...

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ECE1574 – Problem Solving for Engineers With C++ Page 1 of 1 Week 9 – Notes (2) Anatomy of a Function Let’s create a function to calculate the factorial of a number. We will call the function fact() . It will return an integer value. (Factorial = n! = n*(n-1)*(n-2)* . . . * 1, or the multiplication of all integers from 1 to n.) The example includes the function prototype at the top with the preprocessor directives, a function call within the main() function, and a function definition which follows the main() function. int fact(int); // function prototype for fact – it lists argument types in () // there is only one argument, an integer #include <iostream> using namespace std; int main() { int b; cin >> b; if(b>=0) cout<<b<<"! is " << fact(b) <<endl; // function call with argument b else cout <<"not defined for negative numbers"
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  • Spring '08
  • RPBroadwater
  • Negative and non-negative numbers, #include, nfact

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