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CSIT121 Study Questions & 100% Solutions (Verified Answers)
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CSIT121 Study Questions & 100%Solutions (Verified Answers)
is when the ++ is placed in front of its operand. For this, the value of the expression is the variable's
value after the increment. - ✔✔Prefix increment
is when the -- is placed in front of its operand. For this, the value of the expression is the variable's value
after the decrement. - ✔✔Prefix decrement
is when the ++ is placed immediately after the operand. Postfix increment is when the expression's
value is the value of the variable before it is incremented. - ✔✔Postfix increment
is when the -- is placed immediately after the operand. Postfix decrement is when the expression's value
is the value of the variable before it is decremented. - ✔✔Postfix decrement
Returns the absolute value of x. - ✔✔double fabs(double x)
, Rounds up or returns the smallest whole number that is not less than x. - ✔✔double ceil(double x)
Rounds down or returns the largest whole number that is not greater than x. - ✔✔double
floor(double x)
Returns the non-negative square of x. - ✔✔double sqrt(double x)
Returns x raise to the power of y. - ✔✔double pow(double x, double y)
Returns the remainder of x divided by y. - ✔✔double fmod(double x, double y)
function reads a single character from a standard input. - ✔✔getchar
function allows the user to input a character and wait for the enter key. Inputted character will not be
echoed but could be stored if location is specified. It is a nonstandard function and is present in
conio.h header file. - ✔✔getch
function allows the user to input a character and there is no need for the enter key. Inputted
character will be echoed but could be stored if location is specified. - ✔✔getche
function allows the user to input a sequence of characters or string. - ✔✔gets
function writes the string to the standard output device such as the monitor and positions the cursor
to the next line. - ✔✔puts
function writes a single character to the screen - ✔✔putchar
are C implementations that contain collections of useful functions and symbols that may be accessed by
a program. Each library has a standard header file whose name ends with .h. A C system may expand
the number of operations available by supplying additional libraries that are called user-defined -
✔✔Libraries
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