# include & ltmath.h & gt
主()
{
int x,k,flag,n=0,m = 0;/*n用於控制每行10的輸出數量*/
for(x = 2;x & lt=100;x++)
{
flag = 1;
for(k = 2;k & lt= sqrt(x);k++)
if(x % k = = 0){ flag = 0;打破;}
if(flag==1)
{
if(n%10==0)
printf(" \ n ");/*10壹號線*/
n++;
printf("%5d ",x);
m = m+x;
}
}
printf(" \ n ");
Printf("編號:%d\n ",n-1);
Printf("總計:%d\n ",m);
getchar();
}