[Solved] When I compile this why doesn’t it print anything? [closed]

You never call your method “forloop()”, that’s the reason why there’s nothing printed. NewbieJavaDeveloper’s answer is a good one. But if you want to pactice “method and return”, here is another answer: import java.util.Scanner;//import scanner so user can input class arrays { public static void main(String[] param) { String[] animals = arrays(); forloop(animals); System.exit(0); } … Read more

[Solved] What is the difference between char *exp=”a+b” and char exp[]=”a+b”? Are they stored the same way in memory or they differ?

What is the difference between char *exp=”a+b” and char exp[]=”a+b”? Are they stored the same way in memory or they differ? solved What is the difference between char *exp=”a+b” and char exp[]=”a+b”? Are they stored the same way in memory or they differ?

[Solved] Variable Buffer?

You’re hitting undefined behavior for the below line result = result*num; as you’ve not initialized result. The initial value for an uninitialized automatic local variable is indeterminate. Using that invokes UB. Always initialize your local variables, like int count = 0 , result = 0 ; //0 is for illustration, use any value, but do … Read more

[Solved] Why compilers put zeros into arrays while they do not have to?

A structValue{}; is aggregate initialization, so 0 are guaranteed. As A has no user provided constructor because explicitly defaulted constructors do not count as such, the same applies for value initialization as in A* psstructValue = new A();. For the default initialization cases: Reading uninitialized variables is UB, and Undefined behavior is undefined. The compiler … Read more

[Solved] How can “this” pointer be uninitialized inside a class? [closed]

In Visual Studio C++, what are the memory allocation representations?: 0xCCCCCCCC : Used by Microsoft’s C++ debugging runtime library to mark uninitialised stack memory At the moment you do obj->, your obj is not initialized. The two lines of code in the question are not your real code, or there is something important taking place … Read more

[Solved] Variable is uninitialized whenever function ‘main’ is called in C [duplicate]

Well the message is clear and it is easy to spot in your program: double gallons,miles; while (miles>=0||gallons>=0) { miles is declared in a function and so is an automatic variable. Automatic variables are not initialized (so they have garbage values). Now in the first executable statement you compare miles. But miles is still uninitialized. … Read more

[Solved] How do I properly test the char[ ] fields in my custom object for nulls, blanks, or empty? and Why do char[ ] indicate a length of 11?

String.valueOf().length() returns 11 because that is the number of digits/characters in the output (i.e. [@936016386 – an address – has 11 characters) solved How do I properly test the char[ ] fields in my custom object for nulls, blanks, or empty? and Why do char[ ] indicate a length of 11?