60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
|
#include <stdio.h>
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
/* float is automatically promoted to double via ...
|
||
|
|
because of the stack memory requirements */
|
||
|
|
double arithmetic_mean(unsigned int n, ...) {
|
||
|
|
va_list valist;
|
||
|
|
float sum = 0.0;
|
||
|
|
unsigned int i;
|
||
|
|
/* initialize valist for n arguments */
|
||
|
|
va_start(valist , n);
|
||
|
|
|
||
|
|
/* parse n arguments of type float from valist */
|
||
|
|
for (i = 0; i < n; i++) {
|
||
|
|
sum += va_arg(valist , double);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* clean valist */
|
||
|
|
va_end( valist );
|
||
|
|
return sum/n;
|
||
|
|
}
|
||
|
|
|
||
|
|
void max_and_min(int * max, int * min, int n, ...) {
|
||
|
|
va_list valist;
|
||
|
|
/* initialize valist for n arguments */
|
||
|
|
va_start(valist , n);
|
||
|
|
|
||
|
|
*max = va_arg(valist, int);
|
||
|
|
*min = va_arg(valist, int);
|
||
|
|
if ( *max < *min) {
|
||
|
|
int aux = *max;
|
||
|
|
*max = *min;
|
||
|
|
*min = aux;
|
||
|
|
}
|
||
|
|
|
||
|
|
int el;
|
||
|
|
for (int i = 0; i < n-2; i++) {
|
||
|
|
el = va_arg(valist , int);
|
||
|
|
if ( el >= *max ) {
|
||
|
|
*max = el;
|
||
|
|
}
|
||
|
|
else if ( el < *min ) {
|
||
|
|
*min = el;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* clean valist */
|
||
|
|
va_end( valist );
|
||
|
|
}
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
int max;
|
||
|
|
int min;
|
||
|
|
max_and_min(&max, &min, 10, 1, -1, 1, 3, 4, -6, 6, 8, 9, 10);
|
||
|
|
printf("Max: %d Min: %d\n", max, min);
|
||
|
|
return 0;
|
||
|
|
}
|