Page 90 - Modular_V1.1_Flipbook
P. 90
char ch;
clrscr();
cout<<”Enter a character: “;
cin>>ch;
if(isupper(ch))
cout<<”Character in lowercase: “<<(char)tolower(ch);
getch();
}
Recap
A header file can be defined as a collection of predefined functions which you can use to
increase your program productivity and save your programming time.
The ctype.h header file contains the definitions of character handling functions.
The math.h header file provides several mathematical and trigonometric functions that you
can use to perform various mathematical operations.
The stdlib.h header file provides several general purpose functions for dynamic memory
management, random number generation, integer arithmetic, etc.
Exercise
A. Tick (3) the correct option.
1. Which of the following functions is used to convert the entered character into uppercase?
a. toupper( ) c. tolower( )
b. isaplha( ) d. isdigit( )
2. Which of the following header files provides functions to handle characters?
a. ctype.h c. iostream.h
b. stdlib.h d. math.h
3. Which of the following functions returns the floating-point remainder after dividing two
fractional numbers?
a. fmod( ) c. pow( )
b. sqrt( ) d. fabs( )
4. The ……………………. function returns the sine value of the given angle.
a. sin( ) c. sinc( )
b. cos( ) d. csin( )
5. Which of the following functions is used to terminate the calling process?
a. exit( ) c. abort( )
b. abs( ) d. div( )
88 Touchpad MODULAR (Version 1.1)-X

