BSArch/01/prime.c

#include <stdio.h>
#define PRINTPRIME(x) if(prime(x)) printf("%i\n", x)
int prime(int number)
{
  int i;
  for(i=2;i*i<=number;i++){
        if((number%i) == 0)
          return 0;
  }
  return 1;
}
int main(int argc, char * argv[])
{
        int i, j;
        FILE * fp;
        char num[11];
        if(argc > 2 ){
                j=atoi(argv[2]);
                for(i=atoi(argv[1]) ; i< j; i++){
                        PRINTPRIME(i);
                }
        }else {
                fp=fopen(argv[1], "r");
                if(fp==NULL){
                        PRINTPRIME(atoi(argv[1]));
                }else{
                        while(fgets(num, 11, fp))
                                PRINTPRIME(atoi(num));
                        fclose(fp);
                }
        }
}
1	joko	1.1	#include <stdio.h>
2			#define PRINTPRIME(x) if(prime(x)) printf("%i\n", x)
3			int prime(int number)
4			{
5			int i;
6			for(i=2;i*i<=number;i++){
7			if((number%i) == 0)
8			return 0;
9			}
10			return 1;
11			}
12			int main(int argc, char * argv[])
13			{
14			int i, j;
15			FILE * fp;
16			char num[11];
17			if(argc > 2 ){
18			j=atoi(argv[2]);
19			for(i=atoi(argv[1]) ; i< j; i++){
20			PRINTPRIME(i);
21			}
22			}else {
23			fp=fopen(argv[1], "r");
24			if(fp==NULL){
25			PRINTPRIME(atoi(argv[1]));
26			}else{
27			while(fgets(num, 11, fp))
28			PRINTPRIME(atoi(num));
29			fclose(fp);
30			}
31			}
32			}
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