Find word in a sentence, help?

[Superfreak]

Hey everyone, this is my first post here, and I'm new to programming. This is what I'm trying to do. "Create a function that takes parameters of two character arrays (sentence and word), two integers of their lengths, return to the 1 if the word is in the sentence; returns -1 otherwise." This is an assignment by my teacher. I'm not sure how to return a 1, or a -1 if the word is found. Help?

 #include <iostream>
#include <cstdio>
using namespace std;

int main()
{
	char sentence[100];
	char word[25];
	cout << "Type a sentence:\n";
	gets(sentence);
	cout << "Type a word:\n";
	cin >> word;
	int i, len;
	int j, lenS;
	len = strlen(sentence);
	lenS = strlen(word);
	bool match = false;
 for (i=0; i<len-lenS+1 && !match; i++)
 {
  if(sentence[i] == word[0])
  {
   match = true;
   for(int j=1; j<lenS && match; j++)
    if(sentence[i+j] != word[j])
    {
     match == false;
    }
  }
 }
 
 for (int i = 0; word[i] != '\0'; i++)
    cout << word[i];
 if (match)
 {
  cout << " found!\n";
 }
 else
 {
  cout << "not found!\n";
 }
 system("PAUSE");
 return 0;
}

[mobotus]

This might get you pointed in a direction.

http://www.cplusplus.com/forum/beginner/33887/

[Superfreak]

I understand I have to check each letter, one after another. But I'm having trouble trying to implement that.

[Parasin]

on line 11, trying using fgets, it is a little less dangerous than using gets.

Have you tried using the functions strstr, strcmp, strlen? I see strlen, but try implementing the others, this should help

[Superfreak]

Normally, I would try and use code that easier. (Who wouldn't?) Unfortunately, my class is intro level, so we can only use iostrea, and cstdio functions. :/

[Superfreak]

Anyways, I pretty much only had to edit the code a tad bit for it to work.

[code]
#include <iostream>
#include <cstdio>
using namespace std;

int main()
{
char sentence[100];
char word[25];
cout << "Type a sentence:\n";
gets(sentence);
cout << "Type a word:\n";
cin >> word;
int i, len;
int j, lenS;
len = strlen(sentence);
lenS = strlen(word);
bool match = false;
for (i=0; i<len-lenS+1 && !match; i++)
{
if(sentence[i] == word[0])
{
match = true;
for(int j=1; j<lenS && match; j++)
if(sentence[i+j] != word[j])
{
match = false;
}
}
}

for (int i = 0; word[i] != '\0'; i++)
cout << word[i];
if (match)
{
cout << " 1 \n";
}
else
{
cout << " -1 \n";
}
system("PAUSE");
return 0;
}
[code]

[Superfreak]

Okay, so I didn't solve this problem correctly haha. THis is what we are supposed to do. ""create a function that takes parameters of two character arrays (sentence and word), two integers of their lengths, return to the 1 if the word is in the sentence, return -1 if otherwise"
But we aren't actually printing out a 1 or -1. The 1 or -1 determins what message should appear aat the end. 1 = the word is in the sentence, -1 = the word is not in the sentence"

here's my code.
#include <iostream>
#include <cstdio>
using namespace std;


int printsomething (char sentence [], char word [], int len, int lenS);
int printsomething (char sentence [], char word [], int len, int lenS)
{

bool match = false;
for (int i=0; i<len-lenS+1 && !match; i++)
{
if(sentence[i] == word[0])
{
match = true;
for(int j=1; j<lenS && match; j++)
if(sentence[i+j] != word[j])
{
match = false;
}
}
}

for (int i = 0; word[i] != '\0'; i++)
cout << word[i];
int found=printsomething(sentence, word, len, lenS);
if (found==1)
if (match)
{
return 1;
}
return -1;
}

int main()
{
char sentence[100];
char word[25];


cout << "Type a sentence:\n";
gets_s(sentence);
cout << "Type a word:\n";
cin >> word;
int len = strlen(sentence);
int lenS = strlen(word);
printsomething(sentence, word, len, lenS);



system("PAUSE");
return 0;
}



Everytime i run it, it give me infinite copies of whatever word I searched.