[Solved] Pass by Ref Java. Integer ins’t modified, Collection is modified, Why? [duplicate]

In short: primitive types and “Primitive wrappers (Integer, Long, Short, Double, Float, Character, Byte, Boolean)” can not be altered via reference. Check http://en.wikipedia.org/wiki/Immutable_object for Details 5 solved Pass by Ref Java. Integer ins’t modified, Collection is modified, Why? [duplicate]

[Solved] ArrayList of object references

It is already 2, as Array/Collections (to be precise any .NET Class/reference type) are passed by reference by default. In fact the reference variable is passed by value, but behaves as if passed by reference. Why -> Consider var arr = new ArrayList(); The above statement first creates an ArrayList object and a reference is … Read more

[Solved] How to pass array “by reference” in C? [duplicate]

I do not judge your algorithm or C conventions, friends who comment on your problem are totally right. But if you still do it in this way you can use this approach. #include <stdio.h> #include <string.h> void removeFirstAndLastChar(char* string) { memmove(string,string+1,strlen(string)); string[strlen(string)-1]=0; } int main(void) { char title[] = “ABC”; removeFirstAndLastChar(title); printf(“%s”, title); // Expected … Read more

[Solved] C++ functions, pass by reference

I’m not going to answer with a complete solution (and you are free to improve your question so you get better answers later), but regarding the question title, here are some hints. Your declaration char displaymenu(int num1, int num2); and your definition char displaymenu(int &num1 = num1, int &num2 = num2) should have the same … Read more