The prototype of a function can be used to, Select one: O O O a. Declare a function b. Erase a function c. Define a function d. none 7 The output of the code below is #include int main() { int a = 10; int b= 15; printf("%d",(a+1),(b=a+2)); printf("%d=",b); return 0; } Select one: O a. = 10 = 11 b. =11 12= c. =10 11= d. = 11 =12 O Which of the following function declaration (prototype) is illegal Select one: O a. Int 1bhk(int); O b. int 1bhk(int a); c. int b.hk(int a); d. All of the mentioned