当行和列的数目匹配时，col-sum和tranpose函数可以很好地工作，但是当一个行与另一个列不同时，则不能工作
#include<iostream>
using namespace std;
// protype
void showcases();
void accept(int Array[][40], int& a, int& b);
void outputs(int Array[][40], int& a, int& b);
int sum(int Array[][40], int& a, int& b);
void row_sum(int Array[][40], int& a, int& b);
void col_sum(int Array[][40], int& a, int& b); /// something wrong with this function. test it.
void transposed(int Array[][40], int& a, int& b); /// something wrong with this function. test it.
int main()
{
// variable declaration
int a = 0, b = 0, choice = 0, A[20][40], n = 0, x = 0, y = 0, z = 0;
// For loop execution
for (int k = 0; choice != 7; k++)
{
//To showcase the given options
showcases();
//input the user choice
cin >> choice;
cout << "----------------------------------------------" << endl;
/// if else ? you don't like them? + the unreasonable empty lines between the ifs
//To perform a certain operation when a number is selected
if (choice == 1)
{
accept(A, a, b);
cout << "----------------------------------------------" << endl << endl; /// remove this
}
else if (choice == 2)
{
outputs(A, a, b);
cout << "----------------------------------------------" << endl << endl; /// remove this
}
else if (choice == 3)
{
cout << "Matrix elements sum = " << sum(A, a, b) << endl;
cout << "----------------------------------------------" << endl << endl; /// remove this
}
else if (choice == 4)
{
cout << "The sum of matrix rows are as following: -" << endl;
row_sum(A, a, b);
cout << "----------------------------------------------" << endl << endl; /// remove this
}
else if (choice == 5)
{
cout << "The sum of matrix rows are as following: -" << endl;
col_sum(A, a, b);
cout << "----------------------------------------------" << endl << endl; /// remove this
}
else if (choice == 6)
{
cout << "The transpose of the Matrix: " << endl;
transposed(A, a, b);
cout << "----------------------------------------------" << endl << endl; /// remove this
}
else if (choice == 7)
{
cout << "The application will exit now!!" << endl;
cout << "----------------------------------------------" << endl << endl; /// remove this
return -1; /// remvoe this
}
else if (choice >= 8 || choice <= 0)
{
cout << "Your choice is invalid" << endl;
cout << "----------------------------------------------" << endl << endl;
}
/// add something here. figure it out
/// add something here. figure it out
}
/// add something here. figure it out
system("pause");
return 0;
}
// To input the elements
void accept(int Array[][40], int& a, int& b)
{
cout << "Enter number of rows for matrix: ";
cin >> a;
cout << "Enter number of columns for matrix: ";
cin >> b;
cout << endl;
for (int i = 0; i < a; i++)
{
for (int j = 0; j < b; j++)
{
cout << "Enter elements of matrix " << "[" << i + 1 << "]" << " [" << j + 1 << "]: ";
cin >> Array[i][j];
}
}
}
// TO output the elements
void outputs(int Array[][40], int& a, int& b)
{
for (int i = 0; i < a; i++)
{
cout << "[";
for (int j = 0; j < b; j++)
{
cout << Array[i][j];
if (j != b - 1)
cout << " ";
else if (j == b - 1)
cout << "]";
}
cout << endl;
}
}
// To find the total sum
int sum(int Array[][40], int& a, int& b)
{
int s = 0, i, j;
for (i = 0; i < a; i++)
{
for (j = 0; j < b; j++)
{
s += Array[i][j];
}
}
return s;
}
// To find the row sum
void row_sum(int Array[][40], int& a, int& b)
{
int row_s = 0;
for (int i = 0; i < a; i++)
{
for (int j = 0; j < b; j++)
{
row_s += Array[i][j];
}
cout << "R" << i + 1 << " Sum" << " = " << row_s;
row_s = 0;
cout << endl;
}
return;
}
// To find the column sum
void col_sum(int Array[][40], int& a, int& b)
{
int col_s = 0;
for (int i = 0; i < a; i++)
{
for (int j = 0; j < b; j++)
{
col_s += Array[j][i];
}
cout << "C" << i + 1 << " Sum" << " = " << col_s;
col_s = 0;
cout << endl;
}
return;
}
// To transpose (To change the elements of rows and columns) the matrix
void transposed(int Array[][40], int& a, int& b)
{
for (int i = 0; i < a; i++)
{
cout << "[";
for (int j = 0; j < b; j++)
{
cout << Array[j][i];
if (j != b - 1)
cout << " ";
else if (j == b - 1)
cout << "]";
}
cout << endl;
}
return;
}
// To display (To showcase) the available choiced
void showcases()
{
cout << "Menu" << endl;
cout << "1. input elements" << endl;
cout << "2. Display matrix" << endl;
cout << "3. Sum of matrix elements" << endl;
cout << "4. Sum of matrix rows" << endl;
cout << "5. Sum of matrix columns" << endl;
cout << "6. The transpose of elements" << endl;
cout << "7. Exit" << endl;
cout << "Choose among the options above: ";
}
when both the number of rows and columns are 3 this is my output when i select 2 to display the elements
[1 2 3]
[4 5 6]
[6 7 8]
and after transpose this is the new matrix
[1 4 6]
[2 5 7]
[3 6 8]
and col sum works fine
C1 Sum = 11
C2 Sum = 14
C3 Sum = 17
but if number of rows and columns differ this is the output
Eg: no of rows:4
no of columns: 3
output after asking to display the output
[1 2 3]
[4 5 6]
[7 8 9]
[0 2 4]
output after the transpose
[1 4 7]
[2 5 8]
[3 6 9]
[-858993460 -858993460 -858993460]
sum of columns
C1 Sum = 12
C2 Sum = 15
C3 Sum = 18
C4 Sum = 1717986916
如果格式有误，我们将不胜感激，因为它格式不允许我上传，并且会一直告诉我我的代码未格式化或您的帖子大多为代码
答案 0 :(得分：0)
现在我不再收到错误
{
// Variable Declaration
int num1 = 0, num2 = 0, choice = 0, A[10][20], B[10][20], n = 0, x = 0;
for (int k = 0; choice != 7; k++)
{
// Function Call
showcases();
// Input Choice Number
cin >> choice;
cout << "----------------------------------------------" << endl;
// Output Choice & Function Call
if (choice == 1)
{
input_element(A, num1, num2);
}
else if (choice == 2)
{
display_matrix(A, num1, num2);
}
else if (choice == 3)
{
sum(A, num1, num2);
}
else if (choice == 4)
{
row_sum(A, num1, num2);
}
else if (choice == 5)
{
col_sum(A, num1, num2);
}
else if (choice == 6)
{
cout << "The transpose of the matrix is: " << endl;
transp(A, num1, num2);
cout << endl;
}
else if (choice == 7)
{
cout << "The application will exit now!!" << endl;
}
else
{
cout << "Your choice is invalid" << endl;
}
cout << "----------------------------------------------" << endl << endl;
}
// Exit
system("pause");
return 0;
}
// Input Function
void input_element(int A[][20], int& m, int& n)
{
cout << "Enter number of rows for matrix: ";
cin >> m;
cout << "Enter number of columns for matrix: ";
cin >> n;
cout << endl;
for (int i = 0; i < m; i++)
{
for (int j = 0; j < n; j++)
{
cout << "Enter elements of matrix " << "[" << i + 1 << "]" << " [" << j + 1 << "]: ";
cin >> A[i][j];
}
}
}
// Dispaly Matrix Function
void display_matrix(int A[][20], int& m, int& n)
{
for (int i = 0; i < m; i++)
{
cout << "[";
for (int j = 0; j < n; j++)
{
cout << A[i][j];
if (j != n - 1)
cout << " ";
else if (j == n - 1)
cout << "]";
}
cout << endl;
}
}
// Sum Function
void sum(int A[][20], int& m, int& n)
{
int sum = 0;
for (int row = 0; row < m; row++)
{
for (int column = 0; column < n; column++)
{
sum += A[row][column];
}
}
cout << "Matrix Elements Sum = " << sum << endl;
}
// Row Sum Function
void row_sum(int A[][20], int& m, int& n)
{
cout << "The sum of the matrix rows are the following: -\n";
int row_sum = 0;
for (int i = 0; i < m; i++)
{
row_sum = 0;
for (int j = 0; j < n; j++)
{
row_sum += A[i][j];
}
cout << "R" << i + 1 << " Sum = " << row_sum << endl;
}
return;
}
// Column Sum Function
void col_sum(int A[][20], int& m, int& n)
{
cout << "The sum of the matrix columns are the following : -\n";
int col_sum = 0;
for (int j = 0; j < n; j++)
{
col_sum = 0;
for (int i = 0; i < m; i++)
{
col_sum += A[i][j];
}
cout << "C" << j + 1 << " Sum = " << col_sum << endl;
}
return;
}
// Transpose Function
void transp(int A[][20], int& m, int& n)
{
for (int j = 0; j < n; j++)
{
cout << "[";
for (int i = 0; i < m; i++)
{
cout << A[i][j];
if (i != (m - 1))
{
cout << " ";
}
else if (i == (m - 1))
{
cout << "]";
}
}
cout << endl;
}
}
// Showcase Menu Function
void showcases()
{
cout << "Menu" << endl;
cout << "1. Input Elements" << endl;
cout << "2. Display Matrix" << endl;
cout << "3. Sum Of Matrix Elements" << endl;
cout << "4. Sum Of Matrix Rows" << endl;
cout << "5. Sum Of Matrix Columns" << endl;
cout << "6. Transpose Of Matrix" << endl;
cout << "7. Exit" << endl;
cout << "Choose among the options above: ";
}