в 14:20, 25 мая 2010

2010-05-25T14:20:56Z

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2010-05-25T10:23:05Z

1 версия: Импорт контента...

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==31 non-null, automatically==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz2[] = "string text.";

printf("%s",psz2);
}

</source>

==33 non-null, automatically==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test";

printf("%s",psz1);
}

</source>

==4 decimal places, left-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%-20.4f",dPi);
}

</source>

==decimal places, right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%20.4f",dPi);
}

</source>

==default ivalue width, 4==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%d",ivalue);
}

</source>

==minimum 3 overridden, auto 4==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%3d",ivalue);
}

</source>

==minimum 5 overridden, auto 33==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test";

printf("%5s",psz1);
}

</source>

==minimum width 1==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char c = "A";

printf("%c",c);
}

</source>

==minimum width 10, left-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%-d",ivalue);
}

</source>

==minimum width 10, right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%10d",ivalue);
}

</source>

==minimum width 19, print all 17==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test";

printf("%19.19s",psz1);
}

</source>

==minimum width 20, left-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%-20f",dPi);
}

</source>

==minimum width 20, right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%20f",dPi);
}

</source>

==minimum width 38, left-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz2[] = "string text.";

printf("%-38s",psz2);
}

</source>

==minimum width 38, right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test";

printf("%38s",psz1);
}

</source>

==minimum width 5, left-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char c = "A";

printf("%-5c",c);
}

</source>

==minimum width 5, right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char c = "A";

printf("%5c",c);
}

</source>

==Output char==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char c = "A";

printf("%c",c);

}

</source>

==print character with ASCII 90==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char c = "A";

printf("%c",90);
}

</source>

==printf %10d, %10.f==

<source lang="cpp">
#include <stdio.h>
int main()
{
int y = 7, z = 35;
long longVar = 98456;
float floatVar = 8.8;
char *phraseFour = "Formatted: ";
printf("%s %5d %10d %10.5f\n",phraseFour,y,z,floatVar);
return 0;
}

</source>

==printf %d for integer==

<source lang="cpp">
#include <stdio.h>
int main()
{
int x = 5;
printf("%d\n",x);
return 0;
}

</source>

==printf: display message by format==

<source lang="cpp">

//Header file: #include <stdio.h>
//Declaration: int printf(const char *format, ...);
//Return: the number of characters actually printed. A negative value indicates failure.
// The printf() Format Specifiers

//Code Format
//%a: Hexadecimal output in the form 0xh.hhhhp+d (C99 only).
//%A: Hexadecimal output in the form 0Xh.hhhhP+d (C99 only).
//%c: Character.
//%d: Signed decimal integers.
//%i: Signed decimal integers.
//%e: Scientific notation (lowercase e).
//%E: Scientific notation (uppercase E).
//%f: Decimal floating point.
//%F: Decimal floating point (C99 only; produces uppercase INF, INFINITY, or NAN when applied to infinity or a value that is not a number. The %f specifier produces lowercase equivalents.)
//%g: Uses %e or %f, whichever is shorter.
//%G: Uses %E or %F, whichever is shorter.
//%o: Unsigned octal.
//%s: String of characters.
//%u: Unsigned decimal integers.
//%x: Unsigned hexadecimal (lowercase letters).
//%X: Unsigned hexadecimal (uppercase letters).
//%p: Displays a pointer.
//%n: The associated argument must be a pointer to an integer. This specifier causes the number of characters written (up to the point at which the %n is encountered) to be stored in that integer.
//%%: Prints a percent sign.

#include <stdio.h>
int main(void){
printf("Hi %c %d %s", "c", 10, "there!");
}

/*
Hi c 10 there!*/

</source>

==printf ivalue with + sign==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%+d",ivalue);
}

</source>

==printf %ld for long integer number==

<source lang="cpp">
#include <stdio.h>
int main()
{
char *phraseTwo = "Here"s some values: ";
char *phraseThree = " and also these: ";
int y = 7, z = 35;
long longVar = 98456;
float floatVar = 8.8;
printf("%s %d %d %s %ld %f\n",phraseTwo,y,z,phraseThree,longVar,floatVar);
return 0;
}

</source>

==printf %s for string==

<source lang="cpp">
#include <stdio.h>
int main()
{
printf("%s","hello world\n");
char *phrase = "Hello again!\n";
printf("%s",phrase);
return 0;
}

</source>

==print ivalue as octal value==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%o",ivalue);
}

</source>

==print lower-case hexadecimal==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%x",ivalue);
}

</source>

==prints 2 chars, left-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test",
psz2[] = "string text.";

printf("%-19.2s",psz1);
}

</source>

==prints 2 chars, right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test";

printf("%19.2s",psz1);
}

</source>

==prints first 2 chars==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test";

printf("%.2s",psz1);
}

</source>

==print the ASCII code for c==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char c = "A";

printf("%d",c);
}

</source>

==print upper-case hexadecimal==

<source lang="cpp">
#include <stdio.h>
int main( )
{
int ivalue = 1234;

printf("%X",ivalue);
}

</source>

==right-justify with leading 0"s==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%020f",dPi);
}

</source>

==using default number of digits==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%f",dPi);
}

</source>

==using printf arguments==

<source lang="cpp">
#include <stdio.h>
int main( )
{
char psz1[] = "this is a test",
psz2[] = "string text.";

printf("%*.*s",19,6,psz1);
}

</source>

==width 10, 8 to right of "."==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%10.8f",dPi);
}

</source>

==width 20, 2 to right-justify==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%20.2f",dPi);
}

</source>

==width 20, scientific notation==

<source lang="cpp">
#include <stdio.h>
int main( )
{
double dPi = 3.14159265;

printf("%20.2e",dPi);

}

</source>

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C/stdio.h/printf - История изменений

в 14:20, 25 мая 2010

Admin: 1 версия: Импорт контента...