Change signature

//Initial function signature
int exFunction2(int a, int b) {
    int x = a+b;
    return x;
};

int main() {
    int a = 0, b = 1;
    int x = exFunction2(a, b);
    return 0;
}

//Name changed, the third parameter introduced
int exFunction3(int a, int b, int c) {
    int x = a+b;
    return x;
};

int main() {
    int a = 0, b = 1;
    int x = exFunction3(a, b, 0); //default value '0' added
    return 0;
}

//This function will be turned into a block
float multiply (int x, int y) {
return x * y;
}

int main (int argc, const char * argv[]) {
@autoreleasepool {
float result;
result = multiply( 10, 20 );
}
return 0;
}

int main (int argc, const char * argv[]) {
@autoreleasepool {
float result;
result = //a block was generated
^float(int x, int y) {
return x * y;
}(10, 20);
}
return 0;
}

# This function will be renamed
def fibonacci( n ):
a, b = 0, 1
while b < n:
print( b )
a, b = b, a+b

n = int(input("n = "))
fibonacci( n )

# Function with the new name
def fibonacci_numbers( n ):
a, b = 0, 1
while b < n:
print( b )
a, b = b, a+b

n = int(input("n = "))
fibonacci_numbers( n )

//This function will be renamed
//and a default parameter will be added
function result() {
}

function show_result() {
    alert('Result: ' + result());
}

//Function with a new name and default parameter
function generate_result(input = 100) {
}

function show_result() {
    alert('Result: ' + generate_result());
}