Code not compiling [closed]

开发者_高级运维 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 11 years ago.

#include<stdio.h>
#include<math.h>
void insert(int *,int);

int main(int argc, char argv[])
{
    int tree[1000];

    memset(tree,'\0',1000);
    int i=1;

    while (!argv[i])
    {   
        insert(tree,atoi(argv[i]));
    }
    int depth=0;
    printf("Enter depth");
    scanf("%d",&depth);

    int x=pow(2,depth);
    int y=2x-1;
    int count=0;
    for(;x<=y;x++)
    {
        if((tree[x]!=NULL) && (tree[2x+1]==NULL) && (tree[2x]==NULL))
        {
            count++;
        }
    }

    printf("Number of leaf nodes is %d", count);
}

void insert(int *tree,int gmail)
{
    int i=1;

    if(tree[i]==NULL)
    {
        tree[i]=gmail;
    }
    else
    {
        if(gmail>tree[i])
        {
            insert(tree[2i+1],gmail);
        }
        else
            insert(tree[2i],gmail);
    }
}

---

You can't just write this:

insert(tree[2i+1],gmail);

You need to provide the multiplication operation explicitly, ie: [2*i+1] or [2*i].

Also, as tree[2*i0] is an int, not an int*, you'll need it's address:

insert(&(tree[2*i+1]),gmail);

and:

insert(&(tree[2*i]),gmail);

Alternatively, you could use:

insert(tree + (2*i), gmail);

The other error is the pow call. pow returns a double value, not int, so you'll need to cast back to an int:

 int x = (int) pow(2.0, depth);

---

Once you do get it to compile, you'll want to fix this:

while (!argv[i])
{   
    insert(tree,atoi(argv[i]));
}

This will either 1) not execute at all, or 2) give an infinite loop. also, if (!argv[1]) is equivalent to if (argv[i] == NULL), so you're trying to read a value if an only if no value is present to read.

---

#include<stdio.h> 
#include<math.h> 
void insert(int *,int); 
int main(int argc, char argv[]) 
{
   int tree[1000];    
   memset(tree,'\0',1000);    
   int i=1;      
   while (!argv[i])     
   {    
       insert(tree,atoi(argv[i]));   
   }    
   int depth=0;  
   printf("Enter depth");  
   scanf("%d",&depth);     
   int x=pow(2.0,depth); 
   int y=2*x-1;    
   int count=0;
   for(;x<=y;x++)
   {
       if((tree[x]!=NULL) && (tree[2*x+1]==NULL) && (tree[2*x]==NULL))   
       {
           count++;   
       }
   }
   printf("Number of leaf nodes is %d", count);

}

void insert(int *tree,int gmail)
{
   int i=1;
   if(tree[i]==NULL)
   {
       tree[i]=gmail;    
   }
   else 
   {
      if(gmail>tree[i])     
      {
          insert(tree,tree[2*i+1]);     
      }
      else
          insert(tree,tree[2*i]);   
  }

}

this code has work,only in my compiler the memset function has not recognize what is this function ?

---

It looks like you are using 2i and 2x as a subscript into an array. This is not valid the way you are using it. Try replacing occurrences of 2i with 2 * i and 2x with 2 * x.

---

2i+1 isn't valid. try (2*i) + 1

---

2i and 2x are not valid expressions, you should put 2*i and 2*x!

Next time post the line where it doesn't compile and some explanations, it will be more easy to read..