CCTech C++ Intermediate Bootcamp 2022
Miscellaneous
Procedures vs Functions and CQS
- Procedure: A function that does not return a value. Example:
char *prefix = "myprefix";
void printWithPrefix(char *text) {
printf("%s%s\n", prefix, test);
}
- Function: A function that returns a value. Example:
int factorial(int n) {
int f = 1;
for (int i = 2; i <= n; i++)
f *= i;
return f;
}
Functions should either be commands (procedures), that is, they have side-effects and return nothing, or they should be queries (real functions), that is, they return information but have no side-effects.