umakanta

• Feb 3rd, 2007

 

Write a similar function to printf()?

karan

• Mar 1st, 2007

 

hi

printf require unspecified arguments........ to write this C has inbuilt datatypes va_start(), va_list(), va_end and one more ..... every thing has specified task..

printf(char fmt , ...) // use of ellipses

{
va_list ptr;    // ptr is a pointer variable by default no need to apply *

switch(fmt)    // fmt means format s f d or anything else

case s:
va_start(ptr);
putch(ptr);

case d:

case f:
//

same for d f