c prgram to display a binary tree but it is not showing any output, what is the error in this program can you help me

[User 12502505]

#include
#include
struct tree
{
char info;
struct tree *left;
struct tree *right;
};
struct tree *root;
struct tree *stree(struct tree *root,struct tree *r,char info);
void print_tree(struct tree *root,int l);
int main(void)
{
char s[80];
int l=3;
root=NULL;
do
{
printf("enter a letter:");
gets(s);
root=stree(root,root, *s);

}
while(\*s);
print\_tree(root,0);
return 0;

}
struct tree *stree(struct tree *root,struct tree *r,char info)
{
if(!r)
{
r=(struct tree *) malloc(sizeof(struct tree));
if(!r)
{
printf("out of memory \n");
exit(0);

	}
	r->left=NULL;
	r->right=NULL;
	r->info=info;
	if(!root)
	return r;
	if(infoinfo)
	root->left=r;
	else
	root->right=r;
	return r;
	
}
if(infoinfo)
stree(r,r->left,info);
else
stree(r,r->right,info);
return root;

}
void print_tree(struct tree *r,int l)
{
int i;
if(!r) return ;
print_tree(r->right,l+1);
for(i=0;iinfo);
print_tree(r->left,l+1);

}

[Lost User]

You need to use your debugger to gather more information about what happens when you run the code.

[David Crow]

Ditto what Richard suggested. Printing aside, you need to first verify that the tree is being built correctly. The only way to do that is to single step through each line of code (the stree() function) using the debugger. Note the values of info, left, and right along the way. As you build the tree on paper, what you see in the debugger should match. Are you trying to print the tree contents pre-order, in-order, or post-order?

"One man's wage rise is another man's price increase." - Harold Wilson

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[Patrice T]

You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect. The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect. Debugger - Wikipedia, the free encyclopedia[^] Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]

Patrice “Everything should be made as simple as possible, but no simpler.” Albert Einstein