what is the return value of function call f1(2,1)? int f1(int x, int y) { if(x<0 || y<0) return x-y; else return f1(x-1,y) f1(x,y-1); }

The return type of a function refers to the sort of value that it can only return from a specific function.
The right side of an assignment statement, as an actual parameter in a call to a subroutine, or in the middle of a bigger expression are examples of places where a function call typically takes place and where the computer expects to find a value.

static double pythagoras(double x, double y) {

// Computes the length of the hypotenuse of a right

// triangle, where the sides of the triangle are x and y.

return Math.sqrt( x*x + y*y );

}

static int nextN(int currentN) {

if (currentN % 2 == 1) // test if current N is odd

return 3*currentN + 1; // if so, return this value

else

return currentN / 2; // if not, return this instead

}

static int nextN(int currentN) {

int answer; // answer will be the value returned

if (currentN % 2 == 1) // test if current N is odd

answer = 3*currentN+1; // if so, this is the answer

else

answer = currentN / 2; // if not, this is the answer

return answer; // (Don't forget to return the answer!)

}

To learn more about Return Values refer to:

https://brainly.com/question/28448134

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