Is it possible to declare two variables of different types in initialization of for statement in Java?
for (char letter = 'a', int num = 1; maxLine - num > 0; letter++, num++) {
System.out.print(letter);
}
Coming from C/C#, I tried to do it as above, but the compiler says it expects a semicolon identifier after the letter variable declaration.
Because the variable declaration in a for loop follows that of local variable declaration.
Similar to how the following is not valid as a local declaration because it contains multiple types:
char letter = 'a', int num = 1;
It is also not valid in a for loop. You can, however, define multiple variables of the same type:
for (int n = 0, m = 5; n*m < 400; n++) {}
As to why the designers made it that way, ask them if you see them.
This does not work in C/C++ either, not sure about C#, though.
The first part of your for statement might have multiple variables, but with the same type. The reason for this is that it is generally not possible to write:
int n = 0, char c = 5;
If you would like to do this, you needed two statements. Similarly, the first part of for only accepts one statement, so that you cannot put two ones in here.
int i =0 ,char c ='a';?, don't think it works in c++ or c#