Question

Part 2) write a C++ program that declares a 2 dimensional array: int CSIIAssign3 [10][12]; Initialize your array using a text file, user input or assign value while declaring the array, you can choose the method. Then,

a. Write a loop to print first row of the array on one line, using cout.

b. Write a loop to print first column of the array on one line, using cout.

c. Write a loop to print first five rows of the array on one line, using cout, each line in a single output line.

d. Write a loop to print the entire array backward and upside down, so that the last index appears first, with the last column on the left. Here is an example: {2,3,4} {8,6,9} You want to print it as: {9,4} {6,3} {8,2}

Answer 1

Ans:-

Code:-

#include<iostream>//for input output operations
using namespace std;
int main()
{//declare array of size 10rows * 12 cols
int CSllAssign3[10][12];
int v=0;//used for assign
//initialise the array from 0 to 119
for(int i=0;i<10;i++){//for each row of matrix
for(int j=0;j<12;j++){//for each column of matrix for particular row
CSllAssign3[i][j]=v;
v++;//increment value of v
}
}

//print the array
for(int i=0;i<10;i++){
for(int j=0;j<12;j++){
cout<<CSllAssign3[i][j]<<" ";//print the matrix element corresponding to ith row jth column

}cout<<"\n";// change the line after every row
}

//-----------------------------------------------------------------------------------------------
cout<<"\n\n\n\n";//a) print first row
for(int j=0;j<12;j++)//for each column
{
cout<<CSllAssign3[0][j]<<" ";//print first row element i.e 0 index for each column
}
//------------------------------------------------------------------------------------------------
cout<<"\n\n\n\n";//b) print first column
for(int i=0;i<10;i++)//for each row
{
cout<<CSllAssign3[i][0]<<" ";//print first column element i.e 0 index for each row
}
//------------------------------------------------------------------------------------------------
cout<<"\n\n\n\n";//c) print first 5 rows in single line
for(int i=0;i<5;i++){//for first five rows i.e 0 to 4
for(int j=0;j<12;j++){//for each column
cout<<CSllAssign3[i][j]<<" ";//print the element

}
}
//------------------------------------------------------------------------------------------------
cout<<"\n\n\n\n";//d) print matrix backward and upside down
for(int j=11;j>=0;j--){//starting from last column to first column. print element of particular column from last row to first row
for(int i=9;i>=0;i--){//starting from last column to first column
cout<<CSllAssign3[i][j]<<" ";

}
cout<<"\n";
}
return 0;}

Output:-

There are 5 parts of output, first is the matrix and the rest 4 corresponding to each part.

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