Dynamic memory allocation for file handling

Hi

I am processing soem text files in C using dyanmic memory allocation where I need to compare 2 files with 100000 records.
the code is

FILE *f;
char s[10],s1[10];
char a[LIMIT][10],a1[LIMIT][10];//LIMIT = 100000

int x=0,y,i=0,j=0,k,i_sec=0,j_sec=0,k_sec,k_comp,l_com p,q;

//master.txt is the masterfile.Ex: G11

f=(FILE *)malloc(100000);

f=fopen("C:/WIN95/Desktop/master.txt","r");

if (!f)
return 1;

while ((fgets(s,11,f)!= NULL) && (i < LIMIT)) //fgets reads a string from the file
{

strcpy(a[i],s);
//printf("% d ---- %s\n",i,a[i]);
++i;
}

k=i;

//printf("k= %d",k);

free(f);
fclose(f);

But I get a memeory error; perhaps exceeding the heap allocation.

I will be very thankful if you can help me here.

Quote:

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f=(FILE *)malloc(sizeof(FILE));

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What the hell are you doing? You don't allocate space for file pointers. Furthermore, don't typecast your malloc returns. This isn't C++ so there's no point in ever doing so.

Quzah.

Code:

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while ((fgets(s,11,f)!= NULL)

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Buffer overflow, you have only space for 10 characters. Change it to:

Code:

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while ((fgets(s,10,f)!= NULL)

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