Count Word

#include
int cntwrd(char *);
void main()
{
int x;
char a[81];
gets(a);
x=cntwrd(a);
printf("%d",x);
}
int cntwrd(char *p)
{ // main 2
int spc;
spc=0;
while(*p==' ')
{
p++;
}
while(*p=='\0')
{
if(*p==' ')
{
spc++;
while(*p==' ')
{
p++;
}
}
else
{
p++;
}
p--;
if(*p==' ')
{
spc--;
}
spc++;
return spc;


} //main 2
}//main