very simple C programing , getting errors and please take a look at my code?

This is my program and it compile without any problem but when I run it I get segmentation fault great and if there are other problems (which I am sure there are plenty of them) please tell me,,,

Thanks so much
Here is the link of code and I also attached it here as well

https://www.dropbox.com/sh/72501ycafg6u7e7/jv_zCC17aV

driver.cgrade.cgrade.hstats.cstats.h

You create ARRAY as an array of char pointers, but they are all unitialized, pointing who-knows-where. You then use them as destinations for fgets().

You either need to malloc the space for each string you're attempting to read with fgets, or simply make ARRAY a static 2D array with enough columns to hold your largest input.

Can you please explain more,I am very new to C

Whoops. I scanned through code a bit quick, so what I said isn't quite correct, but essentially the same problem.

You created ARRAY as an array of pointers to strings. As such, the strings are immutable - you cannot change them.

Given each string is 3 chars longs, create ARRAY as

Code:

char ARRAY[ARRAY_SIZE][4] = {"aaa","bbb","ccc","ddd","eee","fff","ggg","hhh","iii","jjj"};

This way you can modify them.

How I can pass that array to "void print_array_names" and how to use it for fgets ?

1. Learn how to indent code -> SourceForge.net: Indentation - cpwiki
driver.c and grade.c look awful. stats.c looks like it was written by someone else.

2. Pick meaningful variable names. Just calling something ARRAY doesn't say anything at all, when it's obvious from the rest of the declaration that it is an array.

So perhaps

Code:

char studentNames[ARRAY_SIZE][NAME_SIZE] = {"aaa","bbb","ccc","ddd","eee","fff","ggg","hhh","iii","jjj"};
int studentGrade[ARRAY_SIZE]= {9,20,30,40,50,60,70,80,90,100};

Here's how you declare / call a function with a 2D array parameter.

Code:

void foo ( char studentNames[ARRAY_SIZE][NAME_SIZE] ) {
    printf("%s\n", studentNames[0] );
}
int main ( ) {
    char studentNames[ARRAY_SIZE][NAME_SIZE] = ....
    foo( studentNames );
}

Notice how the function parameter declaration is a copy/paste of the variable declaration you want to pass into it later.


> fgets(array_grade[0],10,stdin);
Grades are integers, so you need to fgets() into a temporary char buffer, then convert that buffer into an integer (see sscanf or strtol)