411 REFERENCE · Wikibooks
C++ Programming/Scope/Examples/Program Average
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
// Program Average
#include <iostream>
using namespace std;
float a[10]; /* a is now in scope.*/
int length; /* length is now in scope.*/
float average(){
float result = 0.0; /* result is now in scope.*/
for(int i = 0; i < length; i++){ /* i is now in scope.*/
result += a[i];
} /* i is now out of scope.*/
return result/length;
} /* result is now out of scope.*/
int main(){
length = 0;
cout << "enter a number for each of the next 10 lines" << endl;
while( length != 10 )
{ cin >> a[length++]; }
float av = average(); /* av is now in scope.*/
cout << endl << "average: " << av << endl;
return 0;
} /* All variables now out of scope.*/