The problem is that Stud_Names[100] is an array of char and not an array of strings.

If you go to the second name you just start from the second character in the name and then you also delete the first name.

You should define

char Stud_Names[100][MAXLENGTH];

and in the cycle

scanf("%s", &Stud_Names[i])

the same for stud_ID and all the strings.

Why do you do use structure? It is a better way to organize the data.

typedef struct

{

char name[MAXLENGTH];

char ID[MAXLENGTH];

float mark1;

float mark2;

} STUDENT;

STUDENT math class[100];

i don't know about struct. when i enter char Stud_Names[100][MAXLENGTH]; i am having an error saying that 'MAXLENGTH' undeclared

@peter i did it but the problem is still the same if i enter Mike Smith for the name i cannot enter the ID because it skips it and go directly to Marks as if the space between the name takes up the space for ID

const char MAXLENGTH = 2;

const char *Stud_Names[2][MAXLENGTH];

const char *Stud_ID[2][MAXLENGTH];

is it correct?

MAXLENGTH should be the number of character in the string, 100 is OK if you do not want dynamic allocation. 2 is too short. You should run a debugger following line by line the code to understand the error. 90 % of programming work is finding errors!

Well, first of all:

Do you realy need to store all the marks an all the names in memory?

You can just read them, one by one, into the same buffers, compare to maximums to those you already computed, and put aside maximum mark and number (and name, I think) of the student, on which current maximum was obtained.

It would be someting like this (I omit the logic with averaging the marks, for simplicity):

#define STRLEN 100

char* current_name=malloc(STRLEN+1);

char* max_name=malloc(STRLEN+1);

char* cp;

int current_value = 0;

int max_value = 0;

int max_i = 0;

for(i=0;i

I think that the best solution is to resolve that with dynamic allocation of memory. Doing that without its look like basic exam question for students.

Anyway - try reading about preprocessing in C - especially #define method.

Regards