C语言问题，亲们快啊！用筛选法求一百以内的素数，要求每输出五个数换一行 。
\u6025\uff01\uff01\u660e\u5929\u5c31\u8981\u8003\u8bd5\u4e86\uff01c\u8bed\u8a00\u7f16\u7a0b\u9898\u3002\u6c42\u51fa100-200\u4e4b\u95f4\u7684\u6240\u6709\u7d20\u6570\uff0c\u8f93\u51fa\u65f6\u4e00\u884c\u6253\u5370\u4e94\u4e2a\u7d20\u6570\u3002/*
\u4f60\u4e4b\u524d\u5199\u7684\u4ee3\u7801\u6211\u4e0d\u77e5\u9053\u662f\u4ec0\u4e48\u539f\u7406\uff0c\u6240\u4ee5\u6211\u6539\u4e86\u4e00\u90e8\u5206
\u9996\u5148\uff0c\u641e\u6e05\u695a\u7d20\u6570\u7684\u539f\u7406,\u518d\u505a\u9898\u5427!
1\u4e0e\u672c\u8eab\u4e4b\u95f4\u7684\u6570\uff08\u4e0d\u5305\u62ec1\u4e0e\u672c\u8eab\uff09,\u90fd\u4e0d\u80fd\u88ab\u672c\u8eab\u6574\u9664\uff0c\u5219\u662f\u7d20\u6570
\u4f8b\u5982: 8\u662f\u5426\u4e3a\u7d20\u6570?
\u5224\u65ad\u65b9\u6cd5:\u75288\u4f9d\u6b21\u9664\u4ee5(2,3,4,5,6,7)\u8fd9\u51e0\u4e2a\u6570\uff0c\u5176\u4e2d\u53ea\u8981\u6709\u4e00\u4e2a\u80fd\u88ab\u6574\u9664(8/2=4,8/4=2,\u4f59\u6570\u4e3a0)
\uff0c\u90a3\u4e488\u5c31\u4e0d\u662f\u7d20\u6570
*/
#include
#define NUM 100 //\u9884\u5904\u7406\uff0c\u53ea\u8981\u5c06100\u6539\u6210\u5176\u4ed6\u7684\u6570\uff0c\u5c31\u53ef\u4ee5\u7ed9\u5b9a\u503c\u4ee5\u5185\u7684\u7d20\u6570
void main()
{
int a[NUM+1];
int b,n;
for(b=1;b<=NUM;b++) {
a[b]=b; //*\u4f7fa[1]~a[100]\u503c\u4e3a1~100
}
a[1]=0; //*\u6316\u6389a[1]
for(n=2;n<NUM;n++){
for(b=2;b<n;b++){
if(a[n]%b==0){ //\u5224\u65ada[n]\u662f\u5426\u80fd\u88ab1\u4e0e\u672c\u8eab\u4e4b\u95f4\u7684\u6570\u6574\u9664,
a[n]=0; //\u4e0d\u662f\u7d20\u6570\uff0c\u8d4b\u503c\u4e3a0
break; //\u8df3\u51fa\u7b2c\u4e8c\u91cd\u5faa\u73af\uff0c\u7ee7\u7eed\u5224\u65ad\u4e0b\u4e00\u4e2a\u6570
}
}
}
for(b=1;b<=NUM;b++){
if(a[b]!=0) { //\u5224\u65ad\u662f\u5426\u975e0\uff0c\u662f\u5219\u8f93\u51fa
printf("%5d",a[b]);
}
}
}
int main( )
{
int a[100],i,j;
for(i=0;i<100;i++)
a[i]=i+1;
a[0]=0;
for(i=1;i<100;i++){
if(a[i] == 0)
continue;
for(j=i+1;j<100;j++)
if(a[j]%a[i] == 0)
a[j] = 0;
}
j=0;
for(i=0;i<100;i++){
if(a[i] != 0){
printf("%2d ", a[i]);
j++;
if(j%5 ==0)
printf("\n");
}
}
return 0;
}
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