Question

c++

1. When you have a C-String in your source code, you must include the header file string.h in your program. True False 2. The declaration statement double scores[30]; declares an array which has 30 double type elements and score[30] is the last element. True False 3. Variables declared within a function are called local variables. True False

Answer 1

1)When you have a C-String in your source code,you must include the header file string.h in your program.

Answer)TRUE

While using strings in c-programming, we use the string handling functions, that are predefined in the string.h header file. Hence, we always use the string.h header file while using the string functions in c.

2)The declaration statement double scores[30]; declares an array which has 30 double type elements and score[30] in the last element.

Answer) False

In an array, the indexing starts from 0 , 1, 2, 3 and so on. Here in the question it is declared that double scores[30], that means the indexing of the elements starts from 0 , 1,2, 3,...................29. The last index of the array is 29 and doesent have the score[30] i.e, 30 th indexed element.

3)Variables declared within a function are called local variables.

Answer)True

All the variables that are declared within the function have their scope till that function defination only i.e, As soon as the function is completed , those variables doesn't have any scope outside the function. They have the local scope. Therefore they are called local variables.