Rajgopal

#include<stdio.h>#include<stdlib.h>//#include<argp.h>#include<stdarg.h>char *convert(unsigned int num, int base){	static char buf[33];	char *ptr;		ptr=&buf[sizeof(buf)-1];	*ptr='\0';	do	{		*--ptr="0123456789abcdef"[num%base];		num/=base;	}while(num!=0);	return(ptr);}void myprintf(const char*str,...){		const char *p;	int i;	unsigned u;	char *s;	//    printf(">>>>%s",str);	//  printf ("%d",n);		va_list argp;	va_start(argp, str);		p=str;		for(; *p!='\0'; p++)	{		if(*p!='%')		{			putchar(*p);			continue;		}		p++ ;		switch(*p)		{			case 'c' : i=va_arg(argp,char);putchar(i);break;			case 'd' : i=va_arg(argp,int);			if(i<0){i=-i;putchar('-');}puts(convert(i,10));break;			case 'o': i=va_arg(argp,unsigned int); puts(convert(i,8));break;			case 's': s=va_arg(argp,char *); puts(s); break;			case 'u': u=va_arg(argp,unsigned int); puts(convert(u,10));break;			case 'x': u=va_arg(argp,int); puts(convert(u,16));break;			case '%': putchar('%');break;		}	}		va_end(argp);}int main(){	void myprintf(char *,...);	char * convert(unsigned int, int);	int i=65;	char str[]="This is my string";	myprintf("\nMessage = %s%d%x",str,i,i);}