Inline Functions. ... In C

What do you mean by inline function?
The idea behind inline functions is to insert the code of a called function at the point where the function is called. If done carefully, this can improve the application's performance in exchange for increased compile time and possibly (but not always) an increase in the size of the generated binary executables.

Write a program that ask for user input from 5 to 9 then calculate the average 
#include "iostream.h"
int main() {
int MAX = 4;
int total = 0;
int average;
int numb;
for (int i=0; i<< "Please enter your input between 5 and 9: "; cin >> numb;
while ( numb<5>9) {
cout << "Invalid input, please re-enter: "; cin >> numb;
}
total = total + numb;
}
average = total/MAX;
cout << "The average number is: " <<>}

Write a short code using C++ to print out all odd number from 1 to 100 using a for loop 
for( unsigned int i = 1; i < = 100; i++ ) if( i & 0x00000001 ) cout <<> 

Tell how to check whether a linked list is circular. 

Create two pointers, each set to the start of the list. Update each as follows:

while (pointer1) {
pointer1 = pointer1->next;
pointer2 = pointer2->next; if (pointer2) pointer2=pointer2->next;
if (pointer1 == pointer2) {
print (\"circular\n\");
}
}

OK, why does this work?
If a list is circular, at some point pointer2 will wrap around and be either at the item just before pointer1, or the item before that. Either way, it’s either 1 or 2 jumps until they meet.