简单的C语言计算问题

求几个简单c语言程序设计判断任意

1 判断闰年 void main() { int year; printf("please input a year: "); scanf("%d",&year); if((year%4==0&&year%100!=0)||(year%400==0)) printf("The year: %d is RunNian!\n",year); else printf("The year: %d isn't RunNian!\n",year); } 2 输出图形 void main() { int i,j; for(i=0;i void main() { long num; int n[7],pl...全部

  1 判断闰年 void main() { int year; printf("please input a year: "); scanf("%d",&year); if((year%4==0&&year%100!=0)||(year%400==0)) printf("The year: %d is RunNian!\n",year); else printf("The year: %d isn't RunNian!\n",year); } 2 输出图形 void main() { int i,j; for(i=0;i void main() { long num; int n[7],place,i,flag; printf("请输入一个整数（0 ~ 999999）:"); scanf("%ld",&num); if(num>99999) place=6; else if(num>9999) place=5; else if(num>999) place=4; else if(num>99) place=3; else if(num>9) place=2 else place=1; printf("位数:%d\n",place); n[6]=mun/10000 n[5]=num/10000; n[4]=(int)(num-n[5]*10000)/1000; n[3]=(int)(num-n[5]*10000-n[4]*1000)/100; n[2]=(int)(num-n[5]*10000-n[4]*1000-n[3]*100)/10; n[1]=(int)(num-n[5]*10000-n[4]*1000-n[3]*100-n[2]*10); printf("反序数字为："); 5 连接字符串 char str1[100]; char str2[100]; void Strcat(str1,str2) char *str1,*str2; { int len; int i=0; len=strlen(str1); while(*(str2+i)) { *(str1+i+len)=*(str2+i); i++; } } int main() { scanf("%s",&str1); scanf("%s",&str2); Strcat(&str1,&str2); printf("%s",str1); getchar(); getchar(); } 6 判断素数 void main() { int m,i,k; printf("please input a number:\n"); scanf("%d",&m); k=sqrt(m); for(i=2;i=k) printf("该数是素数"); else printf("该数不是素数"); } 另外一个慢慢考虑中……。
  收起