C语言，编写函数判断一个整数是否为素数，在主函数中调用该函数并输出100以内的全部素数？ 求 c语言大神 编写函数判断n是否为素数，在主函数中通过调用...
\u7f16\u5199\u51fd\u6570\u5224\u65ad\u4e00\u4e2a\u6570\u662f\u5426\u4e3a\u7d20\u6570\uff0c\u5728\u4e3b\u51fd\u6570\u4e2d\u8c03\u7528\u8be5\u51fd\u6570\u8f93\u51fa100\u4ee5\u5185\u7684\u5168#include int isprime(int n){int i;for(i=2;i*i1; }int main() {int i;for(i=1;i<101;i++)if(isprime(i))printf("%d ",i);printf("\n");return 0;}
#include
int f(int x)
{
if (x==1)return 0;//1\u4e0d\u662f\u7d20\u6570\u3002
else
{
for(int i=2;i<=x;i++)
if(x%i==0)break;//\u88ab\u4e00\u4e2a\u6570\u6574\u9664\u540e\u8df3\u51fa\u3002
if(i==x)return 1;//\u7d20\u6570\u53ea\u80fd\u88ab1\u548c\u81ea\u5df1\u6574\u9664\u3002
else return 0;
}
}
void main()
{
int m,n,sum=0;
scanf("%d",&m);//\u8f93\u5165m\uff0c\u5bf9m\u4ee5\u5185\u7684\u6570\u8fdb\u884c\u5224\u65ad\u3002
for(n=1;n<=m;n++)//\u5224\u65ad1\u5230m\u7684\u6570\u3002
if(f(n)==1)sum+=n;//\u5224\u65ad\u662f\u5426\u4e3a\u7d20\u6570\uff0c\u662f\u5c31\u53e0\u52a0\u3002
printf("%d\n",sum);
}
#include <stdio.h>
int is_prime_number(int n)
{
int i;
int result = 1;
if(n==1)
return 0;
for(i=2;i<n;i++)
{
if(n%i==0)
{
result = 0;
break;
}
}
return result;
}
int main()
{
int n;
printf("100以内的素数包括：
");
for(n=1;n<=100;n++)
{
if(is_prime_number(n))
{
printf("%d ",n);
}
}
printf("
");
return 0;
}
绛旓細鍦–璇█涓紝鍙互缂栧啓涓涓嚱鏁癴lower()鏉ュ垽鏂竴涓暣鏁版槸鍚︿负鈥滄按浠欒姳鏁扳銆備互涓嬫槸涓绉嶅彲鑳界殑瑙ｆ硶锛♡♡ 鏈夊府鍔╁埌鐨勮瘽锛岄夯鐑﹂噰绾冲摝锛♡♡
绛旓細scanf("%d",&a);if(a%2==1)printf("odd\n");else printf("even\n");return 0;}
绛旓細printf(鈥滄槸鏁存暟\n鈥);
绛旓細int aa(int n){ if(n%2)return 0;else return 1;} 鍦绋嬪簭涓紝褰撹皟鐢ㄦ鍑芥暟鐨勭粨鏋滄槸0鏃讹紝璇佹槑杈撳叆鐨鏁版槸濂囨暟锛屽惁鍒欐槸鍋舵暟銆
绛旓細void main(){ int a,c;int isSus(int n);/*鍑芥暟澹版槑*/ printf("璇疯緭鍏涓鏁存暟a:\n");scanf("%d",&a);c=isSus(a);/*鍑芥暟璋冪敤*/ printf("%d",c);printf("\n");} int isSus(int n)/*鍑芥暟瀹氫箟*/ { int j,t;for(j=2;j<n;j++)if(n%j==0){ t=0;break;} else t=1...
绛旓細C璇█鍒ゆ柇鏄惁涓烘暣鏁帮紝閭ｄ箞鍙彲鑳芥槸鍒ゆ柇杈撳叆鐨勫硷紝鎴栬呭瓧绗︿覆涓殑鍊硷紝鏄惁涓烘暣鏁般傚洜涓轰竴鏃﹀瓨鍌ㄥ湪鍙橀噺涓紝鏍规嵁鍙橀噺绫诲瀷锛岃涔堜负鏁存暟锛岃涔堜负娴偣鏁帮紝鏄纭畾鐨勩備竴銆佸垽鏂濊矾锛1銆佹暣鏁颁腑锛屾寜鍗佽繘鍒惰绠楋紝鍚堟硶瀛楃涓0鍒9锛屽彟澶栧湪鏈鍒濅綅缃彲浠ユ湁绗﹀彿锛屽嵆+鎴栬-銆2銆佸浜庤緭鍏ョ殑鍊硷紝鍙互鍏堝瓨鍌ㄥ埌瀛楃涓蹭腑锛...
绛旓細n, m;printf ("杈撳叆涓涓暣鏁: ");scanf ("%d", &n); m = prime (n);printf ("%d\n", m);}bool prime (int n){int k, j;int flag = 1;k = sqrt (n);for (j = 2; j <= k; j++)if (n % j == 0)flag = 0;if (!flag)return 0;elsereturn 1;} ...
绛旓細}//缂栧啓娴嬭瘯涓诲嚱鏁癷nt main(){ int n; scanf("%d",&n); if(n<2) { printf("杈撳叆閿欒!\n"); return -1; } if(isPrime(n)) //璋冪敤绱犳暟鍒ゆ柇鍑芥暟 printf("%d is a prime number\n",n); else printf("%d is not a prime number\n",n); ...
绛旓細include<math.h> float x;...if(fabs(x-(int)x)<1e-8)printf(鈥渪鏄涓涓暣鏁\n鈥);else printf(鈥渪涓嶆槸涓涓暣鏁癨n鈥);鏂规硶2:int c=(int)b,d=(int)(b+0.999999)if(c==d)printf(鈥滄槸鏁存暟\n鈥);else printf(鈥滀笉鏄暣鏁癨n鈥);鏂规硶3:float b;...if(b-(int)b==0)printf(...
绛旓細int suShu(int n){ int k,i;k = (int)sqrt(n);for(i = 2; i <= k; i++){ if((n%i) == 0)break;} if(i > k)return 1;return 0;} int main(int argv,char *argc[]){ int i,j;for(i = 3, j = 0; i <= 100; i++){ if(suShu(i) == 1){ j++;printf(...
