code snippet for finding position of any sub-string in a main-string.

Hey guys, here i am with a small but sometimes useful code. This code snippet will find the position of any sub-string in the main-string. So, here we goooooo...........

int find_pos(char *main,char *sub)

{

int count=0;    //initiallizes count with zero.

int len=strlen(sub); //calculates the length of sub-string

int pos=0;  //initiallizes pos with zero.

for(int i=0;main[i]!='\0';i++)

{   //loop to analyse the characters of  main string.

if(sub[0]==main[i])

{   // if the first character of sub matches with the charater of main,THEN

for(int j=0;sub[j]!='\0';j++)

{  //checks the preceeding character of sub & main.

if(sub[j]==main[i+j])

{

count++;   // if TRUE, the adds 1 to count.

if(count==len) //if count is equal to len, THEN saves the values of

{ // 'i' in 'pos'.As this the location of sub-string.

  pos=i;

break;  //After saving, break the loop.

}

}

}

}

if(count==len) //if count is equal to len then break the main loop.

break;

}

return pos; // return position of sub-string.

}

Is it scaring? But i don't thing so. It is a very simple and properly documented program. If you require any help regarding programming in c++ and assembly language you can mail me. I will try to sort you out.