Your own user defined "printf" function

Your own user defined "printf" function


 #include<stdio.h>
 #include<stdarg.h>
 #include<conio.h>
 int fun(int n)
 {
if(n==0)
return 0;
else
{
fun((int)n/10);
putchar((n%10)+48);
}
 }
 void print(char *f,...)
 {
int i;
va_list p;
va_start(p,f);
while(*f!=NULL)
{
if(*f=='%')
{
f++;
switch(*f)
{
case 'd':
fun((va_arg(p,int)));
f++;
break;
case 'c':
putchar(va_arg(p,int));
f++;
break;
case '%':
putchar('%');
f++;
}
}
else
{
putchar(*f);
f++;
}
}
 }
 void main()
 {
char c='I';
int n;
clrscr();
print("Hallo cant you go with us??????\n");
print("Output is 1st:%d\t2nd:%d\t3rd:%d",4,3,85);
print("\nOutput is %c",c);
printf("\nEnter the number:");
scanf("%d",&n);
printf("Here is %d",n);
getch();
 }

Posted in: all about computer languages, C language, customized library functions, Debarghya mukherjee, user defined printf