int main(void) {
SLLStud* hashDict[HASH_MOD] = { NULL };
readManyStudents(hashDict);
printStudents(hashDict);
freePtrs(hashDict);
return EXIT_SUCCESS;
}
int main(int argc, char *argv[]){
char inputFileName[100], outputFileName[100], c;
FILE *inputFile, *outputFile = stdout;//Output is stdout by default
int i, numStudents = 1, errorFlag = 0;
if(argc == 1)
{
//Try to open a file from stdin.
//If it doesn't work, keep trying or q to quit.
do{
printf("Enter a file to read information from (or q to exit):");
scanf("%s", inputFileName);
if(strcmp(inputFileName, "q") == 0){
printf("Terminating program...");
return 0;
}
else if((inputFile = fopen(inputFileName, "r")) == NULL)
printf("Error: file not found\n");
}while(inputFile == NULL);
}
else if(argc == 2)
{
//Only the input file was given
strcpy(inputFileName, argv[1]);
if((inputFile = fopen(inputFileName, "r")) == NULL)
{
printf("ERROR: Invalid file name");
return 1;
}
}
else if(argc == 3)
{
//Both input and output files were given
strcpy(inputFileName, argv[1]);
if((inputFile = fopen(inputFileName, "r")) == NULL)
{
printf("ERROR: Invalid input file name");
return 1;
}
strcpy(outputFileName, argv[2]);
if((outputFile = fopen(outputFileName, "w")) == NULL)
{
printf("ERROR: Invalid output file name");
return 1;
}
}
//Find how many students are here
numStudents = getNumStudents(inputFile);
//Create the array of students
Student students[numStudents];
//Code to scan info in
for(i = 0; i < numStudents; i++)
{
//1301,107515018,"Boatswain","Michael R.",CSE, 230,="R01"
if(fscanf(inputFile, "%d,", &(students[i].term)) != 1)
errorFlag = 1;
if(fscanf(inputFile, "%d,", &(students[i].id)) != 1)
errorFlag = 1;
if(fscanf(inputFile, "\"%[^,\"]\",", students[i].lastName) != 1)
errorFlag = 1;
if(fscanf(inputFile, "\"%[^,\"]\",", students[i].firstName) != 1)
errorFlag = 1;
if(fscanf(inputFile, "%[^,],", students[i].subject) != 1)
errorFlag = 1;
if(fscanf(inputFile, "%d", &(students[i].catalogNumber)) != 1)
errorFlag = 1;
fscanf(inputFile, "%*[^=]=");
if(fscanf(inputFile, "\"%[^\"]", students[i].section) != 1)
errorFlag = 1;
fscanf(inputFile, "%*[^\n]");//Reads out to the end of the line to avoid errors
if(errorFlag)
printf("WARNING: Unexpected or invalid input encountered on line %d!\nUnexpected results may occur...\n", i+1);
errorFlag = 0;
}
//We don't need this anymore
fclose(inputFile);
//Print the output header
printStudentHeader(outputFile);
//Sort the students
sortStudents(students, numStudents);
//Print the students
printStudents(students, numStudents, outputFile);
return 0;
}
