C Progamming - 1

Who is the father of C language?

• Steve Jobs

• James Gosling

• Dennis Ritchie

• Rasmus Lerdorf

Answer explanation

Dennis Ritchie is the father of C Programming Language. C programming language was developed in 1972 at American Telephone & Telegraph Bell Laboratories of USA.

Which of the following is not a valid C variable name?

• int number;

• float rate;

• int variable_count;

• int $main;

Answer explanation

Since only underscore and no other special character is allowed in a variable name, it results in an error.

All keywords in C are in ____________

• LowerCase letters

• UpperCase letters

• CamelCase letters

• None of the mentioned

Which of the following is true for variable names in C?

• They can contain alphanumeric characters as well as special characters

• It is not an error to declare a variable to be one of the keywords(like goto, static)

• Variable names cannot start with a digit

• Variable can be of any length

Which is valid C expression?

• int my_num = 100,000;

• int my_num = 100000;

• int my num = 1000;

• int $my_num = 10000;

Answer explanation

Space, comma and $ cannot be used in a variable name.