素数---小修改2

#include<stdio.h>
int main()
{
    int n,a,b,i;
    int sum=0   ;

    scanf("%d%d",&a,&b);
    {
        for (n=a;n<=b;n++)
        {
            for (i=2;i<=n-1;i++)
                if (n%i==0) break;
            if (i>=n)


                sum+=n;
        }
        printf("%d",sum);
        printf("
");
    }
}

#include<stdio.h>
int main()
{
int n,a,b,i;
int sum=0 ;

scanf("%d%d",&a,&b);
{
for (n=a;n<=b;n++)
{
for (i=2;i<=n-1;i++)
if (n%i==0) break;
if (i>=n)

sum+=n;
}
printf("%d",sum);
printf(" ");
}
}

#include<stdio.h>
int main()
{
    int n,a,b,i;
    int sum=0   ;

    while ( scanf("%d%d",&a,&b)==2)
    {
        for (n=a;n<=b;n++)
        {
            for (i=2;i<=n-1;i++)
                if (n%i==0) break;
            if (i>=n)


                sum+=n;
        }
        printf("%d",sum);
        printf("
");
    }
}

#include<stdio.h>
int main()
{
int n,a,b,i;
int sum=0 ;

while ( scanf("%d%d",&a,&b)==2)
{
for (n=a;n<=b;n++)
{
for (i=2;i<=n-1;i++)
if (n%i==0) break;
if (i>=n)

sum+=n;
}
printf("%d",sum);
printf(" ");
}
}

 

****************************************************************************************************************************************

#include<stdio.h>
int main()
{
    int n,a,b,i;
    int j,s;
    int c[1000];
  while ( scanf("%d%d",&a,&b)==2)
    {
        j=0;
        for (n=a;n<=b;n++)
        {
            for (i=2;i<=n-1;i++)
                if (n%i==0) break;
            if (i>=n)
            
                c[j++]=n;
           
        }
       
        
         s=0;
        for (i=0;i<j;i++)
            s=s+c[i];
        printf("%d
",s);
    }
    return 0;
}

#include<stdio.h>
int main()
{
int n,a,b,i;
int j,s;
int c[1000];
while ( scanf("%d%d",&a,&b)==2)
{
j=0;
for (n=a;n<=b;n++)
{
for (i=2;i<=n-1;i++)
if (n%i==0) break;
if (i>=n)

c[j++]=n;

}


s=0;
for (i=0;i<j;i++)
s=s+c[i];
printf("%d ",s);
}
return 0;
}