Function name: TAN
Function: 正 正 切
Usage: Double Tan (Double X);
Example:
#include
#include
Int main (void)
{
Double Result, X;
X = 0.5;
Result = tan (x);
Printf ("Tan of% LF IS% LF / N", X, Result);
Return 0;
}
Function name: Tanh
Function: Double Tag Positive Split Function
Usage: Double Tanh (Double X);
Example:
#include
#include
Int main (void)
{
Double Result, X;
X = 0.5;
Result = tanh (x);
Printf ("The Hyperbolic Tangent Of% LF IS% LF / N", X, Result;
Return 0;
}
Function name: Tell
Function: Take the current location of the file pointer
Usage: Long Tell (int Handle);
Example:
#include
#include
#include
#include
Int main (void)
{
INT HANDLE;
CHAR MSG [] = "Hello World";
IF (("Test. $$$", O_CREAT | O_TEXT | O_APPEND)) == -1)
{
PERROR ("Error:");
Return 1;
}
Write (Handle, MSG, Strlen (MSG));
Printf ("The File Pointer IS AT BYTE% LD / N", Tell (Handle);
Close (Handle);
Return 0;
}
Function name: Textattr
Function: Settings text properties
Usage: void textttr (int attribute);
Example:
#include
Int main (void)
{
INT I;
CLRSCR ();
For (i = 0; i <9; i )
{
Textattr (i (((i 1) << 4));
CPRINTF ("this is a test / r / n");
}
Return 0;
}
Function Name: TextbackGround
Function: Choose a new text background color
Usage: Void TextBackground (int color);
Example:
#include
Int main (void)
{
INT I, J;
CLRSCR ();
For (i = 0; i <9; i )
{
For (j = 0; j <80; j )
CPRINTF ("C");
CPRINTF ("/ r / n");
TextColor (i 1);
Textbackground (i);
}
Return 0;
}
Function name: TextColor
Function: Select a new character color in text mode
Usage: Void TextColor (Int Color);
Example:
#include
INT main (void) {
INT I;
FOR (i = 0; i <15; i )
{
TextColor (i);
CPrintf ("Foreground Color / R / N");
}
Return 0;
}
Function name: Textheight
Function: Returns a string height based on pixels
Usage: int Far TextHeight (Char far * textstring);
Example:
#include
#include
#include
#include
Int main (void)
{
/ * Request Auto Detection * /
INT GDRIVER = Detect, Gmode, ERRORCODE
INT Y = 0;
INT I;
Char msg [80];
/ * Initialize Graphics and Local Variables * /
INITGRAPH (& GDriver, & gmode, ");
/ * Read Result of Initization * /
ErrorCode = graphresult ();
IF (ErrorCode! = GROK) / * an error occurred * /
{
Printf ("Graphics Error:% S / N", GrapherrorMsg (ErrorCode));
Printf ("Press Any Key to Halt:");
Getch ();
EXIT (1); / * Terminate with an error code * /
}
/ * Draw Some text on the screen * /
For (i = 1; i <11; i )
{
/ * SELECT The text style, direction, and size * /
SetTextStyle (Triplex_Font, Horiz_Dir, i);
/ * CREATE A Message String * /
Sprintf (MSG, "SIZE:% D", I);
/ * OUTPUT the Message * /
Outtextxy (1, y, msg);
/ * Advance to the next text line * /
Y = Textheight (MSG);
}
/ * Clean Up * /
Getch ();
Closegraph ();
Return 0;
}
Function name: TextMode
Function: Set the screen into text mode
Usage: Void TextMode (int M);
Example:
#include
Int main (void)
{
TextMode (BW40);
CPrintf ("abc");
Getch ();
TextMode (C40);
CPrintf ("abc");
Getch ();
TextMode (BW80);
CPrintf ("abc");
Getch ();
TextMode (C80);
CPrintf ("abc");
Getch ();
TextMode (mono);
CPrintf ("abc");
Getch ();
Return 0;
}
Function name: TextWidth
Features: Returns a string width in pixels
Usage: int Far Textwidth;
Example:
#include
#include
#include
#include
Int main (void)
{
/ * Request Auto Detection * /
INT GDRIVER = Detect, Gmode, ERRORCODE
INT x = 0, y = 0;
INT I;
Char msg [80];
/ * Initialize Graphics and Local Variables * /
INITGRAPH (& GDriver, & gmode, ");
/ * Read Result of Initization * /
ErrorCode = graphresult ();
IF (ErrorCode! = GROK) / * an error occurred * /
{
Printf ("Graphics Error:% S / N", GrapherrorMsg (ErrorCode));
Printf ("Press Any Key to Halt:");
Getch ();
EXIT (1); / * Terminate with an error code * /
}
y = getmaxy () / 2;
SetTextJustify (Left_Text, Center_Text);
For (i = 1; i <11; i )
{
/ * SELECT The text style, direction, and size * /
SetTextStyle (Triplex_Font, Horiz_Dir, i);
/ * CREATE A Message String * /
Sprintf (MSG, "SIZE:% D", I);
/ * OUTPUT the Message * /
OutTextxy (X, Y, MSG);
/ * Advance to the end of the text * /
X = TEXTWIDTH (MSG);
}
/ * Clean Up * /
Getch ();
Closegraph ();
Return 0;
}
Function name: Time
Function: Take a day
Usage: LOGN TIME (long * tloc);
Example:
#include
#include
#include
Int main (void)
{
Time_t t;
T = Time (NULL);
Printf ("The Number of Seconds Since January 1, 1970 IS% LD", T);
Return 0;
}
Function name: TMPFILE
Function: Open a temporary file in binary
Usage: file * tmpfile (void);
Example:
#include
#include
Int main (void)
{
FILE * TEMPFP;
Tempfp = tmpfile ();
IF (TEMPFP)
Printf ("Temporary File Created / N);
Else
{
Printf ("Unable to Create Temporary File / N);
Exit (1);
}
Return 0;
}
Function name: TMPNAM
Function: Create a unique file name
Usage: char * tmpnam (char * sptr);
#include
Int main (void)
{
CHAR Name [13];
TMPNAM (Name);
Printf ("Temporary Name:% S / N", NAME);
Return 0;
}
Function Name: TOLOWER
Function: Convert characters to lowercase letters
Usage: int Tolower (INT C);
Example:
#include
#include
#include
Int main (void)
{
Int Length, i;
Char * String = "this is a string";
Length = Strlen (String);
For (i = 0; i { String [i] = tolower (String [i]); } Printf ("% s / n", string); Return 0; } Function name: TouPper Function: Convert characters to uppercase letters Usage: int Toupper (INT C); Example: #include #include #include Int main (void) { Int Length, i; Char * String = "this is a string"; Length = Strlen (String); For (i = 0; i { String [I] = Toupper (String [i]); } Printf ("% s / n", string); Return 0; } Function name: tzset Function: UNIX Time Compatibility Usage: void Tzset (Void); Example: #include #include #include Int main (void) { Time_t td; Putenv ("tz = pst8pdt"); Tzset (); TIME (& TD); Printf ("Current Time =% S / N", ASCTIME (LocalTime (& TD))); Return 0; }
