EvoNext

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#include <iostream> using namespace std; int main() { char chr; cout <<" Wel come to 'LEARN TO CODE' telegram channel.\n"; chr = 'j'; cout <<"Enter 'j' to join our channel." << endl; cin >> chr; cout <<"https://t.me/PROGRAMINGLANGUAGES1"; return 0; } thanks 👉🏿https://t.me/PROGRAMINGLANGUAGES1

//charging of parked car #include <iostream> using namespace std; int main() { char type; int charge, hours; charge = hours* type; cout <<"enter your vehicle 'c' 'b' 't': "; cin >> type; switch(char){ case 'c': cout << "enter the parked hours: "; cin >> hours; charge = 2 * hours; cout <<"your charged amount is $:\n" << charge; break; case 'b': cout <<"enter hours parked: "; cin << hours; charge = 3 * hours; cout <<" your charged amount is $:\n" << charge; break: case 't': cout <<"enter the parked hours: "; cin >> hours; charge = 5 * hours; cout <<"your charged amount is $:\n" << charge; break; } }

//a program that works average of n students' maths score #include <iostream> using namespace std; int main(){ int sum,n,i,sub_total; sum =0; n = 1; sub_total = 0; cout <<"enter number of students: "; cin >>n; int array[sub_total]; for(i=1;i>=n;i++) { if(array[i]>=0){ cout <<"score of e student "<<i <<": " << endl; cin >> array[i]; sum+= array[i]; } } cout <<"the sum is: " << sum << endl; float average; average = sum/n; cout <<"the average is: " << average; }

continued.... In C++ an array variable is actually a pointer variable that points to the first indexed variable of the array. Given the following two variable declarations, p and a are the same kind of variable: int a[10]; #def int* IntPtr; IntPtr p; * The fact that a and p are the same kind of variable. Since a is a pointer that points to a variable of type int (namely the variable a[0]), the value of a can be assigned to the pointer variable p as follows: p = a; After this assignment, p points to the same memory location that a points to. So, p[0], p[1], … p[9] refer to the indexed variables a[0], a[1], … a[9]. The square bracket notation you have been using for arrays applies to pointer variables as long as the pointer variable points to an array in memory » You cannot change the pointer value in an array variable, such as a. 1 //Program to demonstrate that an array variable is a kind of pointer variable. 2 #include <iostream> 3 using namespace std; 4 5 #def int* IntPtr; 6 7 int main( ) 8 { 9 IntPtr p; 10 int a[10]; 11 int index; 12 13 for (index = 0; index < 10; index++) 14 a[index] = index; 15 16 p = a; 17 18 for (index = 0; index < 10; index++) 19 cout << p[index] << " "; 20 cout << endl; 21 22 for (index = 0; index < 10; index++) 23 p[index] = p[index] + 1; 24 25 for (index = 0; index < 10; index++) 26 cout << a[index] << " "; 27 cout << endl; 28 29 return 0; 30 } #what_is_the_output_of_these_program? https://t.me/+txk6Ik_UwGc4ZGM0 https://t.me/+txk6Ik_UwGc4ZGM0

worksheet for c++ prepared at AAU

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#Single_Dimensional_Array The single-dimensional array may be defined as the type of array capable of holding the values of the same data centre in the form of a list EXAMPLE; SEE BELOW #include <iostream> #include <conio.h> using namespace std; void main() { int val_array[3]; int int_val=1,counter; cout<<"Please enter three numbers that you want to multiply"<<endl; for(counter=0;counter<3;counter++) { cin>>val_array[counter]; int_val = int_val*val_array[counter]; } cout<<"The multiplication of these three numbers is = "<<int_val; getch(); } #Multidimensional_Array The multidimensional array may be defined as the array that holds the values in the way a matrix does. The two-dimensional array is used very often, and with the increase in the size of dimension, the array gets complicated. EXAMPLE; SEE BELOW #include <iostream> #include <conio.h> using namespace std; int main() { int val_array[5][5]; int count_rows,count_cols,counter1,counter2; cout<<"Please enter the size of the rows and columns that you wnant to input: "; cin>>count_rows>>count_cols; cout<<"PLease enter the values for matrics in row wise manner"<<endl; for(counter1=0;counter1<count_rows;counter1++) for(counter2=0;counter2<count_cols;counter2++) cin>>val_array[counter1][counter2]; cout<<"The matrix will be as follows"<<endl; for(counter1=0;counter1<count_rows;counter1++) { for(counter2=0;counter2<count_cols;counter2++) cout<<val_array[counter1][counter2]<<" "; cout<<endl; } getch(); return 0; } https://t.me/PROGRAMINGLANGUAGES1

#TRY_ON_YOUR IDE C++ code that calculate addition of matrix transpose and multiplication #include <iostream> using namespace std; void multi(int arr[3][4],int arr2[4][3]); void add(int mat[3][4],int m[3][4]); void transpose(int arr[3][4]); int main() { int a; int matrix[3][4],matri[4][3],m2[3][4]; cout<<"command; "<<"\t enter respective numbers\n\t1)transpose\t2)matrixes multipilication with another matrixes\t3) to add matrices with another\n\t4)exit ";cin>>a; if(a!=4) { for(int i=0;i<3;i++) { cout<<"\tenter 3x4 matrices row "<<i+1<<endl; for(int j=0;j<4;j++) { cin>>matrix[i][j]; } } } switch(a) { case 1: transpose(matrix); do { main();} while(a==4); break; case 2: for(int i=0;i<4;i++) { cout<<"enter 4x3 matrix's row "<<i+1<<endl; for(int j=0;j<3;j++) { cin>>matri[i][j]; } }multi(matrix,matri); do { main();} while(a==4); break; case 3: for(int i=0;i<3;i++) { cout<<"enter second 3x4 matrix's row "<<i+1<<endl; for(int j=0;j<4;j++) { cin>>m2[i][j]; } } add(matrix,m2); do { main();} while(a==4); } return 0; } void transpose(int arr[3][4]) { cout<<endl<<"before transposing"<<endl; for(int i=0;i<3;i++) { for(int j=0;j<4;j++) { cout<<"\t"<<arr[i][j]; } cout<<endl; } cout<<"after transposing"<<endl; for(int i=0;i<=3;i++) { for(int j=0;j<3;j++) { cout<<"\t"<<arr[j][i]; } cout<<endl; } } void multi(int arr[3][4],int arr2[4][3]) { cout<<"\tthe multiplication of two matrices are;\n"; int temp[3][4]; for(int i=0;i<3;i++) { for (int j=0;j<3;j++) { temp[i][j]=0; for(int k=0;k<4;k++) { temp[i][j]+=arr[i][k]*arr2[k][j]; } } } for(int i=0;i<3;i++) { for(int j=0;j<3;j++) { cout<<"\t"<<temp[i][j]; } cout<<endl; } } void add(int mat[3][4],int m[3][4]) { cout<<"\n\tthe addition of two matrices are: \n"; for(int i=0;i<3;i++) { for(int j=0;j<4;j++) { cout<<"\t"<<mat[i][j]+m[i][j]<<"\t"; } cout<<"\n"; } } https://t.me/PROGRAMINGLANGUAGES1 https://t.me/PROGRAMINGLANGUAGES1

C++ code that calculate addition of matrix transpose and multiplication #include <iostream> using namespace std; void multi(int arr[3][4],int arr2[4][3]); void add(int mat[3][4],int m[3][4]); void transpose(int arr[3][4]); int main() {    int a;    int matrix[3][4],matri[4][3],m2[3][4];    cout<<"command; "<<"\t enter respective numbers\n\t1)transpose\t2)matrixes multipilication with another matrixes\t3) to add matrices with another\n\t4)exit  ";cin>>a;    if(a!=4)    {         for(int i=0;i<3;i++)     {     cout<<"\tenter 3x4 matrices row "<<i+1<<endl;     for(int j=0;j<4;j++)     {         cin>>matrix[i][j];     }     }    }     switch(a)     {     case 1:         transpose(matrix);         do            {                main();}             while(a==4);         break;     case 2:          for(int i=0;i<4;i++)     {     cout<<"enter 4x3 matrix's row "<<i+1<<endl;     for(int j=0;j<3;j++)     {         cin>>matri[i][j];     }     }multi(matrix,matri);      do            {                main();}             while(a==4);     break;     case 3:          for(int i=0;i<3;i++)     {     cout<<"enter second 3x4 matrix's row "<<i+1<<endl;     for(int j=0;j<4;j++)     {         cin>>m2[i][j];     }        } add(matrix,m2);          do            {                main();}             while(a==4);     }  return 0; }  void transpose(int arr[3][4])  {        cout<<endl<<"before transposing"<<endl;        for(int i=0;i<3;i++)         {             for(int j=0;j<4;j++)             {                 cout<<"\t"<<arr[i][j];        }        cout<<endl; } cout<<"after transposing"<<endl; for(int i=0;i<=3;i++) {     for(int j=0;j<3;j++)     {         cout<<"\t"<<arr[j][i];     } cout<<endl; }  }  void multi(int arr[3][4],int arr2[4][3])  {      cout<<"\tthe multiplication of two matrices are;\n";      int temp[3][4];      for(int i=0;i<3;i++)     {         for (int j=0;j<3;j++)         {            temp[i][j]=0;            for(int k=0;k<4;k++)            {                temp[i][j]+=arr[i][k]*arr2[k][j];            }         }     }     for(int i=0;i<3;i++)         {             for(int j=0;j<3;j++)             {                 cout<<"\t"<<temp[i][j];                 }    cout<<endl;         }  }  void add(int mat[3][4],int m[3][4])  {      cout<<"\n\tthe addition of two matrices are: \n";      for(int i=0;i<3;i++)      {          for(int j=0;j<4;j++)          {              cout<<"\t"<<mat[i][j]+m[i][j]<<"\t";          } cout<<"\n";      }  } ✳️ከHigh school እስከ Campus አብረናችሁ ነን ! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @QesemAcademy 📚JOIN: @QesemAcademy ╚════════════╝

sample code with //break// statement #include <iostream> using namespace std; int main() { for (int i = 0; i < 10; i++) { if (i == 4) { break; } cout << i << "\n"; } return 0; } /*the output is 1 2 3 */ https://t.me/PROGRAMINGLANGUAGES1

example of programe with //continue// #include <iostream> using namespace std; int main() { for (int i = 0; i < 10; i++) { if (i == 4) { continue; } cout << i << "\n"; } return 0; } /* the output is 1 2 3 4 5 6 7 8 9 10 */ https://t.me/PROGRAMINGLANGUAGES1