Help with a very simple C program....Already written, not working right!
Hey,
I have to write a program for class that takes in a last name, first name, and exam score and stores them into seperate arrays. No structs in this however. Then I have to print the high score, low score, and avg score. Thats it. I thought that I had it right but it doesnt work correctly when I run it, even though it compiles fine.
Heres my program...
Code:
#include <stdio.h>
#define CLASS_SIZE 10
#define NAME_SIZE 20
int getInfo(char[][20], double[], char[][20], int);
void printResults(char[][20], double[], char[][20], int);
void doCalcs(double[], int);
int main()
{
int count = 0;
char first[10][20];
char last[10][20];
double score[10];
count = getInfo(first, score, last, count);
doCalcs(score, count);
printResults(first, score, last, count);
return 0;
}
int getInfo(char first[][20], double score[], char last[][20], int count)
{
char again='y';
while(again=='y')
{
printf("Please enter the student's first name -- ");
scanf("%s", first[count]);
printf("Please enter the student's last name -- ");
scanf("%s", last[count]);
printf("Please enter the exam score -- ");
scanf("%lf", &score[count]);
count++;
printf("Would you like to enter another record? (y/n)");
//scanf("%c", &again);
scanf("%s", &again);
}
return count;
}
void doCalcs(double score[], int count)
{
int i;
double high;
double low = 105;
double avg;
double total;
for(i=0; i<count; i++)
{
if(score[i] > high)
{
high = score[i];
}
if(score[i] < low)
{
low = score[i];
}
}
for(i=0; i<count; i++)
{
total = total + score[i];
}
avg = total/count;
printf("Total number of students = %d\n", count);
printf("Highest score = %lf\n", high);
printf("Lowest score = %lf\n", low);
printf("Average score = %lf\n", avg);
}
void printResults(char first[][20], double score[], char last[][20], int count)
{
int i;
for(i=0; i<count; i++)
{
printf("%s, %s %4.2lf\n", last[i], first[i], score[i]);
}
}
This is what Im getting when I enter some information...
Please enter the student's first name -- Joe
Please enter the student's last name -- Smith
Please enter the exam score -- 30
Would you like to enter another record? (y/n)y
Please enter the student's first name -- Bob
Please enter the student's last name -- White
Please enter the exam score -- 80
Would you like to enter another record? (y/n)n
Total number of students = 2
Highest score = 0.000000
Lowest score = 0.000000
Average score = 37270968922511555218815399770931566435968430750338 28121034433494206368125488490594734490445484833985 42932704708245693379119842581045603106586418751351 90047137854599889866604204928347406994246874588887 4194112758707602325504.000000
7N, 0.00
, 0.00
Segmentation fault
Any help would be greatly appreciated!!!! Thank you! :)
