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40 lines (37 sloc) 643 Bytes
#include <stdarg.h>
#include <stdio.h>
void minPrintf(char *fmt, ...)
{
va_list ap; /*points to each unnamed arg in turn*/
char *p, *sval;
int ival;
double dval;
va_start(ap, fmt); /*make ap point to 1st unnamed arg*/
for(p = fmt; *p; p++)
{
if(*p != '%')
{
putchar(*p);
continue;
}
switch(*++p)
{
case 'd':
ival = va_arg(ap, int);
printf("%d", ival);
break;
case 'f':
dval = va_arg(ap, double);
printf("%f", dval);
break;
case 's':
for(sval = va_arg(ap, char *); *sval; sval++)
putchar(*sval);
break;
default:
putchar(*p);
break;
}
}
va_end(ap); /*clean up when done*/
}