c++ - vprintf not consuming item from va_list -

c++ - vprintf not consuming item from va_list -

i trying write variation of printf item beingness printed , format beingness printed adjacent parameters in phone call like...

print(2, "%s", "hello", "%.5u", 25);

i have studied on var args , came with....

void print(int count, ...) { va_list varg; va_start(varg, count); while(count-- > 0) { char* format = va_arg(varg, char*); vprintf(format, varg); } va_end(varg); }

it appears vprintf not consuming item using stack. output is

hellohello

i believe beingness expanded out too

printf("%s", "hello); printf("hello");

so doing wrong vprintf isn't consuming "hello" arg list?

update: per comment below

void print(int count, ...) { va_list varg; va_start(varg, count); while(count-- > 0) { char* format = va_arg(varg, char*); void* arg = va_arg(varg, void*); printf(format, arg); } va_end(varg); }

this seems job done.

the va_list nil address (in typical implementations). passed value function, original in calling function unmodified.

c++ c printf varargs