Opening and Reading files fails

<p>I am currently trying to read a file and count the number of instances of a user-specified string in an input file and output them to another file,.</p><p>However when I try to open the file, <code>fopen</code> returns <code>NULL</code>. Here's what I have so far:</p><pre><br /><code>#include <stdio.h><br />#include <stdlib.h><br />#include <string.h><br /><br /><br />int main(int argc, char **argv)<br />{<br /> char in[50];<br /> char out[50];<br /> char target[50];<br /><br /> getIns(in,out,target);<br /> Search(in, out, target);<br /> //printf("string entered: %s\n%s\n%s", in, out, target);<br /><br /><br /><br /> return 0;<br />}<br /><br />int getIns(char *i, char *o, char *t)<br />{<br /> printf("please enter name of input file you wish to search: \n -i ");<br /> fgets(i, 50, stdin);<br /><br /> printf("please enter name of output file you wish to write to: \n -o ");<br /> fgets(o,50,stdin);<br /><br /> printf("Please enter the string you wish to search for \n -c ");<br /> fgets(t, 50, stdin);<br /><br /> return 1;<br />}<br /><br /><br />int Search(char *i, char *o, char *t)<br />{<br /> char*p;<br /> int c = 0;<br /> int start;<br /> char *data = NULL;<br /> FILE*f;<br /><br /> f = fopen(i, "r");<br /><br /> if (f == NULL)<br /> {<br /> printf("file not found \n Quitting...");<br /> exit(1);<br /> } <br /><br /> while(!feof(f))<br /> {<br /> fgets(data, sizeof(data), f);<br /> p = strstr(data,t);<br /> while (p != NULL)<br /> {<br /> c++;<br /> p = strstr(p , t);<br /> }<br /> }<br /><br /> if (c == 0)<br /> {<br /> printf("String not in file\n");<br /> }<br /> if (c > 0)<br /> {<br /> printf("word: %s found: %d times\n", t, c);<br /> }<br /><br /> fclose(f);<br /><br /> return 1;<br />}<br /></code><br /></pre><hr /><p><strong>Edit:</strong></p><p>I've made some changes to the code following the responses and now, my program crashes on reading the file. New code:</p><pre><br /><code>#include <stdio.h><br />#include <stdlib.h><br />#include <string.h><br /><br />int Search(char *i, char *o, char *t)<br />{<br /> char*p;<br /> int c = 0;<br /> int start;<br /> char data[1024];<br /> FILE*f;<br /><br /> f = fopen(i, "r");<br /><br /> if (f == NULL)<br /> {<br /> printf("file not found \n Quitting...");<br /> exit(1);<br /> } <br /><br /> while(fgets(data, sizeof(data), f))<br /> {<br /> fgets(data, sizeof(data), f);<br /> p = strstr(data,t);<br /><br /> while (p != NULL)<br /> c++; p = strstr(p+1 , t);<br /> }<br /><br /> if (c == 0)<br /> {<br /> printf("String not in file\n");<br /> }<br /> if (c > 0)<br /> {<br /> printf("word: %s found: %d times\n", t, c);<br /> }<br /><br /> fclose(f);<br /><br /> return 1;<br />}<br /><br />int getIns(char *i, char *o, char *t)<br />{<br /> printf("please enter name of input file you wish to search: \n -i ");<br /> fgets(i, 50, stdin); i[strcspn(i, "\n")] = 0;<br /><br /> printf("please enter name of output file you wish to write to: \n -o ");<br /> fgets(o, 50, stdin); o[strcspn(o, "\n")] = 0;<br /><br /> printf("Please enter the string you wish to search for \n -c ");<br /> fgets(t, 50, stdin); t[strcspn(t, "\n")] = 0;<br /><br /> return 1;<br />}<br /><br />int main(int argc, char **argv)<br />{<br /> char in[50];<br /> char out[50];<br /> char target[50];<br /><br /> getIns(in,out,target);<br /> Search(in, out, target);<br /><br /> return 0;<br />}<br /></code><br /></pre><br /><h2>Click here view more answers <a href="http://ift.tt/1KG77s9">http://ift.tt/1KG77s9</a></h2>