一，比较两个数组，并输出

#include                                            
int search(int *apt,int n,int key)                           
{                                                            
  int *p;                                                   
  for(p=apt;p
  if(*p==key)                                               
  return p-apt;                                             
  return -1;                                                
}                                                            
                                                             
int b[]={90,80,70,60,50,40,772,294,1065,184};                
                                                             
int a[]={90,80,70,60,50,40,30,20,10,9,8,7,6,5,42,40,50,1,2,3};
                                                             
main()                                                       
{                                                            
  int i;                                                    
  int c[sizeof(b)/sizeof(b[0])];                            
  int q=0;                                              
  int d;                                                    
  printf("The elements of array a is:\n");   
  for(i=0;i
  {                                                         
  printf(" %d",a[i]);                                      
  }                                                         
  printf("\n");                                             
  printf("The elements of array b is:");                    
  for(i=0;i
  {                                                         
  printf(" %d",b[i]);                                      
  }                                                         
  printf("\n");  
  for(i=0;i
  {                                                         
  int key;                                                 
  key=b[i];                                               
                                                             
  d=search(a,sizeof(a)/sizeof(a[0]),key);                  
  if(d>-1)                                                 
  {                                                        
   c[q]=key;                             
   q=q+1;                                                 
  }                                                        
  }                                                         
  printf("The number is:\n",q);                             
  for(i=0;i
  printf(" %d",c[i]);      
 
  getchar();
  return 0;      
}