I wrote a program that takes in this kind of input:
Short, Sue, , 3.11
Cisneros, Juan, G, 3.67
Andrew, T, 5.67
Superlonglastnamethatdoesnotfit, Betty, Boop, 2
Black, Shirley, T, 4.00and my program outputs this:
Highest gpa: 4.00
Average gpa: 3.19
Lowest gpa: 2.00
Sue Short 3.11
Juan G. Cisneros 3.67
Betty B. Superlonglastnaemtha 2.00
Shirley T. Black 4.00and my problem is that the average should be 3.20, not 3.19 because its 3.195. I looked over my code again and I dont think anything is wrong. Do you guys might have an idea why I might be getting this result???
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define TEN 10
#define THREE 3
#define TWENTY 20
#define TEN 10
#define ONE 1
#define FIFTY 50
#define ONE_THOU 1000
typedef struct {
char first_name[TEN+1];
char middle_initial;
char last_name[TWENTY+1];
double users_gpa;
} format_of_file;
int main () {
/* Declarations: File I/O */
FILE *inp, *outp;
double sum,place_temp,min_value,max_value,average_value;
char place_holder[TWENTY],first_file[FIFTY],second_file[FIFTY],str[ONE_THOU],*ptr;
format_of_file organized[ONE_THOU];
int i, count;
int delimiter_count;
/* Get users inputs */
printf("Enter the input file name: ");
scanf("%s", first_file);
printf("Enter the output file name: ");
scanf("%s", second_file);
inp = fopen(first_file, "r");
outp = fopen(second_file, "w");
/* Test if both files for validity */
if (inp == NULL) {
perror("Invalid File");
exit(EXIT_FAILURE);
}
if (outp == NULL) {
perror("Invalid File");
exit(EXIT_FAILURE);
}
/* Begin Program execution and get each name/gpa until , and then continue */
count = 0;
while (fgets(str,sizeof(str),inp) != NULL) {
delimiter_count = 0;
for(i=0; i<strlen(str); i++)
{
if(str[i]==',')
delimiter_count++;
}
if(delimiter_count==3)
{
/* Get last name */
if ((ptr = strtok(str,", ")) != NULL) {
strcpy(organized[count].last_name,ptr);
if(strlen(str)>TWENTY)
organized[count].last_name[TWENTY]='\0';
}
else {
organized[count].last_name[0]='\0';
}
/* Get first name */
if ((ptr = strtok(NULL,", ")) != NULL) {
strcpy(organized[count].first_name,ptr);
if(strlen(str)>TEN)
organized[count].first_name[TEN]='\0';
}
else {
organized[count].first_name[0]='\0';
}
/* Get Middle or gpa */
if ((ptr = strtok(NULL,", ")) != NULL ) {
/* Checks to see if it is a middle name or double value */
strcpy(place_holder,ptr);
place_temp = atof(place_holder);
if(place_temp == 0) {
organized[count].middle_initial=ptr[0];
}
else {
/* Convert string to double */
organized[count].users_gpa = atof(ptr);
organized[count].middle_initial = '\0';
}
}
else {
organized[count].middle_initial='\0';
}
/* Get gpa */
if ((ptr = strtok(NULL,", ")) != NULL) {
/* Convert string to double */
organized[count].users_gpa = atof(ptr);
}
count++;
}
/* Check to see if the size of the file is under a thousand */
if (count > ONE_THOU) {
printf("Error with file size\n");
return 0;
}
}
/* Close first File */
fclose(inp);
/* Find the highest/lowest value/sum and Initialize */
max_value = organized[0].users_gpa;
min_value = organized[0].users_gpa;
sum = 0;
for (i=0;i < count;i++) {
if (max_value < organized[i].users_gpa) {
max_value = organized[i].users_gpa;
}
if (min_value > organized[i].users_gpa) {
min_value = organized[i].users_gpa;
}
sum = sum + organized[i].users_gpa;
}
/* Find the average value */
average_value = (sum/count);
printf("%d\n", count);
/* Display Results */
fprintf(outp,"Highest gpa: %.2f\n", max_value);
fprintf(outp,"Average gpa: %.2f\n", average_value);
fprintf(outp,"Lowest gpa: %.2f\n\n", min_value);
/* Display Corrected Contents */
for (i=0;i < count;i++) {
fprintf(outp,"%s", organized[i].first_name);
if(organized[i].middle_initial!='\0')
fprintf(outp," %c.", organized[i].middle_initial);
fprintf(outp," %s", organized[i].last_name);
fprintf(outp," %.2f\n", organized[i].users_gpa);
}
fclose(outp);
return 0;
}