다른 함수의 범위에서 매개 변수 값 얻기

Question

읽기 입력 변수를 계산 시트의 범위로 가져 오는 방법을 알 수 없습니다. 변수를 다시 정의하는 것이 부족하다고 선언하는 방법에도 불구하고; 행, 열 및 배열 seattingChart는 calculateSeats 함수로 찾을 수 없습니다.

* 추가 ​​된 calculateSeats (seatingChart [rows] [columns]); *

int main() { 

    int seatsSold = 0, oneSeat = 0, seatsTogether = 0, threeSeats = 0, fourSeats = 0, fiveSeats = 0, noSeats = 0, totalSold = 0, 
    rows, columns, pecentageSold, i; 
    const int SIZE = 50; 
    char seatingChart[SIZE][SIZE]; 

    readInput(rows, columns, seatingChart[rows][columns]); // Call read input. 

    // Values of read input are then passed to calculate values. 
    calculateSeats(seatsSold, oneSeat, seatsTogether, threeSeats, fourSeats, fiveSeats, noSeats, i); 

    // Calculated valus are then declared as calculated values and passed to write output. 

    /* int calculatedValues = calculateSeats(seatsSold, oneSeat = 0, seatsTogether = 0, threeSeats = 0, 
              fourSeats = 0, fiveSeats = 0, noSeats = 0); */ 

    // Function is called to write the output. 
    writeOutput(seatsSold, oneSeat, seatsTogether, threeSeats, fourSeats, fiveSeats, noSeats, pecentageSold, totalSold); 

    return 0; // Program ends. 
} 

// Function is needed for assigning values to the char array. Values are then passed from read to calculate. 
int readInput(int & rows, int & columns, int i) { 

    const int SIZE = 50; 
    int seatingChart[SIZE][SIZE]; 
    ifstream inputFile; 
    inputFile.open("SeatingChart.txt"); 
    for (rows; rows < SIZE; rows++) { // Step through the valueless array and give the array values. 
     for (columns; columns < SIZE; columns++) 
      inputFile >> seatingChart[rows][columns]; // Assign the array values from the input file. 
    } 
    inputFile.close(); 

    calculateSeats(seatingChart[rows][columns]); 

    return 0; 
} 

// Function is needed just for calculations. Values are then passed from calculate to write output. 
void calculateSeats(int & seatsSold, int & oneSeat, int & seatsTogether, int & threeSeats, 
        int & fourSeats, int & fiveSeats, int & noSeats, int & sixSeats) { 

    for (int count = 0; count < rows; count++) { // Step back through the array with loaded values. 
     for (int num = 0; num < columns; num++) { 

      // If equal to A and count is equal to count++. Then consecutive read chars is true. 
      if (seatingChart[count][num] == 'A' && seatingChart[count][num] == seatingChart[count][num]++) { 
       seatsTogether++; 

        if (seatsTogether > 1) { 
         threeSeats++; 

        if (seatsTogether > 2) { 
         fourSeats++; 
        } 

        if (seatsTogether > 3) { 
         fiveSeats++; 
        } 

        if (seatsTogether > 4) { 
         sixSeats++; 
        } 
       } 
      } 

      else { 
       seatsSold++; 
       cout << "Total seats sold: " << seatsSold << endl; 
       if (seatsSold == 6) { 
        cout << "Rows with no seats available: " << "row" << seatingChart[count] << endl; 
       } 
      } 
     } 
    } 
} 

Answer 1

행, 열 및 좌석표는 main의 범위에서 선언합니다. 이 변수는 스택에 놓입니다. readInput에 표시되도록하려면 전역 변수로 선언해야합니다. 그래서 이렇게 보일 것입니다.

int row, column; 
char seatingChart[SIZE][SIZE]; 

int main() 
{ 
//your code 
} 

세계는 나쁜 스타일로 간주됩니다. http://en.wikipedia.org/wiki/Global_variable