Can someone please tell me what is wrong with this code
Author
It runs but for some reason it skips over every cinput statement except the first two:
#include
#include
using namespace std;
void main () {
int number_of_students, a=0;
cout << "How many names do you have to enter: ";
cin >> number_of_students;
//create dynamic array
typedef int* intptr;
intptr student_id;
student_id = new int[number_of_students];
intptr midterm;
midterm = new int[number_of_students];
intptr final;
final = new int[number_of_students];
typedef char* charptr;
charptr last_name;
last_name = new char[number_of_students];
// for (a = 0; a < number_of_students; ++a)
// {
cout << "Students ID: ";
cin >> student_idLink
You''re trying to read up-to 8 characters into a single character. Try this:
Also, main is NOT allowed to have a return value of void. It must return an integer, and nothing else.
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// ...char *last_name[8];last_name = new char[number_of_students][8]; // ...// At the end (before the end of main) you MUST have this:delete [] student_id;delete [] last_name;delete [] midterm;delete [] final; Also, main is NOT allowed to have a return value of void. It must return an integer, and nothing else.
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It would seem as though you are putting ++a as your 3rd statement in the for loop, when it should be a++
quote:Original post by Anonymous Poster
it still does not work
That''s remarkably helpful. If you want more help, give more details. Also there''s a small typo in my last post: change "char *last_name[8];" to "char (*last_name)[8];". Other than that, it compiles and works for me. Good luck.
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quote:Original post by mkoday
It would seem as though you are putting ++a as your 3rd statement in the for loop, when it should be a++.
They both work, it doesn''t matter as long as the increment isn''t within a statement that is based off of the intermediate value of the expression. For example:
int a = 5, b;b = ++a;The variable "b" is now equal to 6, and so it "a". However:
int a = 5, b;b = a++;The variable "b" is now equal to 5, and "a" is equal to 6.
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quote:Original post by Null and Void
Also, main is NOT allowed to have a return value of void. It must return an integer, and nothing else.
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Just wanted to point out that you should specify that it''s not allowed if you follow ANSI C standards but heck even my old college teachers used to teach us to use void main( void ) as the main function. But I agree with you, main should always return an integer....
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you should get in the habit of using ++a instead, because when using overloaded ++ operators on objects (such as iterators) the preincrement is faster. Both are equally fast on pointers and other basic types.
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