#include 
     
      #include 
      
       int IsPrime(int num){                 int i= 2;                 if(num ==1)  //1既不是质数也不是合数                                                 return 0;                 for(;i<= num /2;i++)   //或者是for(;i
      
     

#include 
     
      #include 
      
       void test(){                 int a=0, b=0;                 int i=0, j=0;                scanf( "%d%d", &a, &b);                 if(a
      
     

#include 
     
      #include 
      
       void test(){                 int a=0, b=0;                 int i=1;                scanf( "%d%d", &a, &b);                 while(!(i%a==0 && i%b==0))                {                                i++;                }                printf( "least common divisor is: %d\n" , i);                 /*for(i=1;;i++)                {                                if(i%a==0&&i%b==0)                                {                                                printf("least common divisor is: %d\n", i);                                                break;                                }                }*/}int main(){                test();                system( "pause");                 return 0;}
      
     

#include 
     
      #include 
      
       void test(){                 int a=0, b=0;                 int c=0;                scanf( "%d%d", &a, &b);                printf( "a=%d, b=%d\n", a, b);                c= a;                a= b;                b= c;                printf( "a=%d, b=%d\n", a, b);}int main(){                test();                system( "pause");                 return 0;}
      
     

#include 
     
      #include 
      
       void swap(int * i, int* j){                 int tmp= *i ;                * i= *j ;                * j= tmp;}void test(){                 int a=0, b=0;                scanf( "%d%d", &a, &b);                printf( "a=%d, b=%d\n", a, b);                swap(&a, &b);                printf( "a=%d, b=%d\n", a, b);}int main(){                test();                system( "pause");                 return 0;}