C++ Quiz on C++ Library Functions

What does the header file contain?

• Function prototypes for stream manipulators

• Function prototypes for math library functions

• Function prototypes for the C-style standard input/output library functions

• Function prototypes for C-style string-processing functions

Which function is used to convert a character to an uppercase letter?

• toupper(c)

• isalpha(c)

• isupper(c)

• tolower(c)

What is the purpose of the header file?

• Contains function prototypes for C-style string-processing functions

• Contains classes for accessing data in containers

• Contains function prototypes for math library functions

• Contains classes for runtime type identification

Which function returns the absolute value of a real number?

• pow(x, y)

• sqrt(x)

• abs(x)

• fabs(x)

What is the purpose of the header file?

• Contains function prototypes for functions that perform input from files on disk and output to files on disk

• Contains function prototypes for conversions of numbers to text

• Contains function prototypes for math library functions

• Contains function prototypes for the C-style standard input/output library functions

Which function is used to determine if a character is a digit?

• isupper(c)

• isalpha(c)

• islower(c)

• isdigit(c)

What is the purpose of the header file?

• Contains classes and functions used by the C++ Standard Library to allocate memory

• Contains classes for runtime type identification

• Contains classes and functions normally used by stream processing to process data in the natural form for different languages

• Contains classes for defining the numerical data type limits on each computer platform

Which function is used to calculate the exponential function of a number?

• asin(x)

• exp(x)

• log(x)

• acos(x)

What is the purpose of the header file?

• Contains function prototypes for C-style string-processing functions

• Contains function prototypes for functions that perform input from strings in memory and output to strings in memory

• Contains function prototypes for the C-style standard input/output library functions

• Contains function prototypes for math library functions

Which function is used to convert a character to a lowercase letter?

• tolower(c)

• toupper(c)

• isalpha(c)

• isdigit(c)