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#include <stdio.h>
#include <stdarg.h>
void simple_printf(const char* fmt, ...)
{
va_list args;
va_start(args, fmt);
while (*fmt != '\0') {
if (*fmt == 'd') {
int i = va_arg(args, int);
printf("%d\n", i);
} else if (*fmt == 'c') {
// A 'char' variable will be promoted to 'int'
// A character literal in C is already 'int' by itself
int c = va_arg(args, int);
printf("%c\n", c);
} else if (*fmt == 'f') {
double d = va_arg(args, double);
printf("%f\n", d);
} else if (*fmt == 'l') {
long d = va_arg(args, long);
printf("%ld\n", d);
}
++fmt;
}
va_end(args);
}
int main(void)
{
simple_printf("dlcff", 3, 4L, 'a', 1.999, 42.5);
}
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