Chapter 04 exp 01

#include <stdio.h>
#include<string.h>
#define MAXLINE 1000
int getline1(char line[],int max);
int strindex(char source[], char searchfor[]);
char pattern[]  =  "papa";
int main()
{
        char line [MAXLINE];
       int match =0;
        int output[1000]={0};
        int i=0,j;
        while(getline1(line,MAXLINE)>0)
        {
            if(strindex(line,pattern)>=0)
            {

                match=strindex(line,pattern);
                output[i++]=match;



            }
        }
        for(j=0;j<i;j++)
        {
            printf("The pattern has matched at position  %d\n",output[j]);
        }

    return 0;
}
int getline1(char s[],int lim)
{
    int c,i;
    i=0;
    while(--lim >0 && (c=getchar())!=EOF && c!='\n')
    {
        s[i++]=c;
    }
    if(c=='\n')
    {
        s[i++]=c;

    }
    s[i]='\0';
    return i;
}
int strindex(char s[],char t[])
{
    int i,j,k;
    for(i=0;s[i]!='\0';i++)
    {
        for(j=i,k=0;t[k]!='\0' && s[j]==t[k];j++,k++)
        {
            ;
        }
        if(k>0 && t[k]=='\0')
        {
            return i;
        }
    }
    return -1;
}