Newbie college student :)
Hi guys,
I am learning C. And made a program and it's giving me Segmentation fault when I run it :confused: . Please I need help. I run it under munro unix. Can anyone tell me what am I doing wrong.
Code:
#include <stdio.h>
#define A 100
#define B 90
#define C 80
#define D 70
#define E 60
#define ZERO 0
int main()
{
char ch;
char firstname, lastname;
char low=3;
char high=12;
int mark=0, n=0;
int randNumber;
srand(time(0));
randNumber=rand() % 10 + 3;
printf("The number of students in the class is %d.\n", randNumber);
while (n != randNumber)
{
n++;
printf ("Please enter your first name: \n");
scanf ("%s", &firstname);
fflush(stdin);
printf ("Please enter your last name: \n");
scanf ("%s", &lastname);
fflush(stdin);
printf ("Please enter your marks: \n");
scanf ("%d", &mark);
fflush(stdin);
if (mark >= B || mark <= A)
printf("%s %s %d Grade A\n", firstname, lastname, mark);
else if (mark >= C || mark <= B)
printf("%s %s %d Grade B\n", firstname, lastname, mark);
else if (mark >= D || mark <= C)
printf("%s %s %d Grade C\n", firstname, lastname, mark);
else if (mark >= E)
printf("%s %s %d Grade D\n", firstname, lastname, mark);
else if (mark < E)
printf("%s %s %d Grade F\n", firstname, lastname, mark);
else
printf("Marks are invalid./n");
return 0;
}
}
Thanks a lot guys...