16-Bit Language Tools Libraries
vprintf
Description:
Include:
Prototype:
Prints formatted text to stdout using a variable length argument list
<stdio.h>
<stdarg.h>
int vprintf(const char * format , va_list ap );
Arguments:
format
ap
format control string
pointer to a list of arguments
Return Value:
Remarks:
Returns number of characters generated or a negative number if an
error occurs.
The format argument has the same syntax and use that it has in
printf .
To access the variable length argument list, the ap variable must be ini-
tialized by the macro va_start and may be reinitialized by additional
calls to va_arg . This must be done before the vprintf function is
called. Invoke va_end after the function returns. For more details see
stdarg.h
Example:
#include <stdio.h>
#include <stdarg.h>
/* for vprintf, printf */
/* for va_start, */
/* va_list, va_end */
void errmsg(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
printf("Error: ");
vprintf(fmt, ap);
va_end(ap);
}
int main(void)
{
int num = 3;
errmsg("The letter '%c' is not %s\n", 'a',
"an integer value.");
errmsg("Requires %d%s\n", num,
" or more characters.\n");
}
Output:
Error: The letter 'a' is not an integer value.
Error: Requires 3 or more characters.
DS51456E-page 88
? 2008 Microchip Technology Inc.
相关PDF资料
SW006015 C COMPILER MPLAB C32
SW300003-EVAL LIBRARY SOFT MODEM-EVAL ONLY
SW300010-EVAL SPEECH RECOG LIBRARY-EVAL ONLY
SW300040-EVAL LIBRARY NOISE SUPPR-EVAL ONLY
SW300060-EVAL LIBRARY ACOUSTIC ECHO-EVAL ONLY
SW300070-EVAL SOFTWARE LIBR ENC/DEC EVAL ONLY
SW500012 HI-TECH C PRO FOR PIC32
SY87701LHI-EVAL BOARD EVAL SY87701 EXPERIMENT
相关代理商/技术参数
SW006013 制造商:Microchip Technology Inc 功能描述:MPLAB C Compiler for dsPIC DSCs
SW006014 功能描述:开发软件 C Compiler for PIC24 MCU RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
SW006015 功能描述:开发软件 MPLAB C32 C Compiler RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors
SW006021-1 制造商:Microchip Technology 功能描述:MPLAB XC8 STANDARD COMPILER 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 STD 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 STANDARD 制造商:Microchip Technology Inc 功能描述:COMPILER, MPLAB XC8, STANDARD 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 ANSI C Compiler for the PIC10 (12),(16),(18) (Workstation License) 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 Standard Compiler 制造商:Microchip Technology Inc 功能描述:OPTOCOUPLERS; Core Architecture:PIC; Software Edition:Standard
SW006021-1N 制造商:Microchip Technology 功能描述:MPLAB XC8 STANDARD COMPILER (F 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 STANDARD COMPILER (FLOATING LICENSE) - Boxed Product (Development Kits) 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 STD FLOAT LIC 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 Standard Compiler (Fltng Lic)
SW006021-2 制造商:Microchip Technology 功能描述:MPLAB XC8 PRO COMPILER WORKSTATION LICENSE 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 PRO COMPILER - Boxed Product (Development Kits) 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 PRO 制造商:Microchip Technology Inc 功能描述:COMPILER, MPLAB XC8, PRO 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 ANSI PRO Compiler for the PIC10 (12),(16),(18) (Workstation License) 制造商:Microchip Technology Inc 功能描述:MPLAB XC8 PRO Compiler 制造商:Microchip Technology Inc 功能描述:SOFTWARE TOOL, MPLAB XC8 PRO COMPILER; Core Architecture:PIC; Supported Families:PIC10, PIC16, PIC18; Software Edition:Linux; License Type:Floating - node; No. of User Licenses:1; Supported Hosts:-
SW006021-2C 制造商:Microchip Technology Inc 功能描述:COMPILER MPLAB XC8 PRO CHI
SW006021-2N 功能描述:开发软件 MPLAB XC8 PRO Compiler (Fltng Lic) RoHS:否 制造商:Atollic Inc. 产品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors