i hope to at least get an example for me to refer. Thanks!
#include <stdio.h>
#include <stdlib.h>
#define FALSE 0
#define TRUE !FALSE
void main (void)
{
int numbers[20] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
int i,j;
int temp;
int match;
for (i = 0;i < 20;i++)
{
temp = 0;
while ((temp < 10) || (temp > 100))
{
printf("Enter a number (%i to go, 999 to quit: ",20-i);
scanf("%i", &temp);
if (temp > 998)
exit(0);
}
match = FALSE;
for (j=0;j < 20;j++)
{
if ((temp == numbers[j]) && (numbers[j] != 0))
{
match = TRUE;
break;
}
}
if (!match)
{
printf("A new number! : %i\n", temp);
numbers[i] = temp;
}
}
}