Help me with my C++ assignment :(, functions wtf? |
Help me with my C++ assignment :(, functions wtf? |
Oct 13, 2009 - 11:59 PM |
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Enthusiast Joined Apr 27, '09 From West Coast Canada Currently Offline Reputation: 0 (0%) |
#include <iostream>
#include <fstream> #include <string> #include <vector> using namespace std; int main() { //declared values/strings/vectors int choice; ifstream inFile; ofstream outFile; string strFName, strLName; string strFileName; vector<string> vecStudent; //ask for file name cout<<"Please enter the data file name (with location): "; cin >> strFileName; //open input file inFile.open(strFileName.c_str()); //error check file name if (inFile.fail()) { cout<<"Input file error!"<<endl; return -1; } do{ //main menu cout<<"----------------------------------------"<<endl; cout<<"Grade Report Program - Main Menu"<<endl; cout<<"----------------------------------------"<<endl; cout<<"Enter 1 to display ALL students"<<endl; cout<<"Enter 2 to add a student name"<<endl; cout<<"Enter 3 to delete a student name"<<endl; cout<<"Enter 4 to modify a student name"<<endl; cout<<"Enter 5 to sort the names by First Name"<<endl; cout<<"Enter 6 to SAVE and quit the program"<<endl; cout<<"----------------------------------------"<<endl; cout<<"Enter menu option: "; cin>>choice; if(choice == 1 ){ //read the names from input file into vector while (inFile >> strFName >> strLName) vecStudent.push_back(strFName+" "+strLName); inFile.close(); //display the content of the vector cout<<"Display ALL student names.."<<endl; for (int i=0; i<vecStudent.size(); i++){ cout <<vecStudent[i]<<endl; } cout<<"---- A total of "<<vecStudent.size()<<" names ----"<<endl; }else if(choice == 2 ){ //add a new name cout<<endl<<"Enter a new name (First and Last Name): "; cin>>strFName>>strLName; vecStudent.push_back(strFName+" "+strLName); cout<<"---- Name "<<strFName<<" " <<strLName<<" has been added ----"<<endl; //functions not yet covered IGNORE THEM }else if(choice == 3 ) cout<<"Function 3 Has Not Yet Been Added"<<endl; else if(choice == 4 ) cout<<"Function 4 Has Not Yet Been Added"<<endl; else if(choice == 5 ) cout<<"Function 5 Has Not Yet Been Added"<<endl; else if(choice == 6 ){ //open output file for writing/saving outFile.open(strFileName.c_str()); if (outFile.fail()) { cout<<"Output file error!"<<endl; return -1; } cout<<"Thanks for using the program. Program terminated"<<endl; //save vector to output file for (int i=0; i<vecStudent.size(); i++) outFile <<vecStudent[i]<<endl; outFile.close(); return 0; }else cout<<"Invalid. Choose again"<<endl; }while(choice != 6); } This post has been edited by Mstoochn: Nov 9, 2009 - 10:28 PM |
Oct 15, 2009 - 6:10 PM |
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Enthusiast Joined Jan 10, '09 From Burtonsville, Maryland Currently Offline Reputation: 1 (100%) |
Mike, have you done your studying? code is rather easy.. check out dreamincode.net.. Btw.. try using a case statement. MUCH easier.
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Still trying to find the cure for ST205 asthma.. 6gc.net's outlaw vigilante because im a LEADER not a follower. |
Oct 15, 2009 - 6:25 PM |
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Enthusiast Joined Nov 18, '08 From Idaho Currently Offline Reputation: 1 (100%) |
wtf
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Oct 15, 2009 - 6:37 PM |
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Enthusiast Joined Feb 15, '08 From Royal Oak, MI Currently Offline Reputation: 7 (100%) |
its been a while... i only remember printf and scanf and arrays...
-------------------- God made man....
Everything else... Made in China |
Oct 15, 2009 - 6:49 PM |
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Enthusiast Joined Jan 10, '09 From Burtonsville, Maryland Currently Offline Reputation: 1 (100%) |
its been a while... i only remember printf and scanf and arrays... I believe thats Java statements -------------------- THIS IS WHERE WE HOLD THEM!
Still trying to find the cure for ST205 asthma.. 6gc.net's outlaw vigilante because im a LEADER not a follower. |
Oct 15, 2009 - 7:03 PM |
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Enthusiast Joined Jan 10, '09 From Burtonsville, Maryland Currently Offline Reputation: 1 (100%) |
im not quite sure what the goal is for your program.. do you want the user to just input 1 grade or more than one?
if more than one, you need your program to gather all user data.. and this is where its tricky b/c im sure if you are assuming all grades are out of 100. Explain to me exactly what your program needs to do so I can further assist you. basic idea is the reorganis the average calculator so its not in the main function, and to add a function for a letter grade #include <iostream> using namespace std; string letter_grade (double grade); double calcaverage (double count, double grade); int main(){ int i = 0; //---Declared Values double grades[1000]; double average = 0; double highest = 0; double lowest = 100; //you need to include this in your program if you want the grade letter displayed if (grade <= 59) grade = 'F'; if (grade <= 69 && grade >= 60) grade = 'D'; if (grade <= 79 && grade>= 70) grade = 'C'; if (grade <= 89 && grade>= 80) grade = 'B'; if (grade >= 90 && grade <= 100) grade = 'A'; while(grades[i-1] != -1 ){ //---While loop until cout<<"Enter your Grades:"<<endl; //--- -1 is chosen cin >> grades[i]; if(grades[i] < 60) cout<<"You Failed! "<<endl; [b]do you want to display the user entry here? << grades; [/b] else cout<<"You Pass! "<<endl; add the letter grade function here if(grades[i] > 100 || grades[i] < -1 ){ //---Error Test -2 > grade < 100 cout << "Invalid grade" << endl; }else{ if(grades[i] == -1) //---end sequence if grade -1 break; else{ if(grades[i] > highest){ //---Create high grade value highest = grades[i]; } if(grades[i] < lowest){ //---Create lowest grade value lowest = grades[i]; } average = average + grades[i]; i++; } } } average = average / i; make calcaverage function work here cout << "lowest: " << lowest << endl; cout << "highest: " << highest << endl; cout << "average: " << average << endl; return 0; } string letter_grade (double grade){ if (grade >= 80) return "A"; if (grade >= 70) return "B"; if (grade >= 60) return "C"; if (grade <= 50) return "U"; return ""; } double calcaverage(double count, double grade){ double avg; avg = grade / count; return avg; } let me know the goal This post has been edited by SlvrCelica09: Oct 15, 2009 - 7:04 PM -------------------- THIS IS WHERE WE HOLD THEM!
Still trying to find the cure for ST205 asthma.. 6gc.net's outlaw vigilante because im a LEADER not a follower. |
Oct 15, 2009 - 8:10 PM |
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Enthusiast Joined Feb 15, '08 From Royal Oak, MI Currently Offline Reputation: 7 (100%) |
its been a while... i only remember printf and scanf and arrays... I believe thats Java statements my mistake its just plain turbo C -------------------- God made man....
Everything else... Made in China |
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