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	joko	1.3
4	joko	1.1	int prime(int number)
5			{
6			int i;
7			for(i=2;i*i<=number;i++){
8			if((number%i) == 0)
9			return 0;
10			}
11			return 1;
12			}
13	joko	1.3
14	joko	1.1	int main(int argc, char * argv[])
15			{
16			int i, j;
17			FILE * fp;
18			char num[11];
19			if(argc > 2 ){
20			j=atoi(argv[2]);
21			for(i=atoi(argv[1]) ; i< j; i++){
22			PRINTPRIME(i);
23			}
24			}else {
25			fp=fopen(argv[1], "r");
26			if(fp==NULL){
27			PRINTPRIME(atoi(argv[1]));
28			}else{
29			while(fgets(num, 11, fp))
30			PRINTPRIME(atoi(num));
31			fclose(fp);
32			}
33			}
34			}
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