1. Given a 2-by-5 integer array X, answer the following questions: (program is n
ID: 3817230 • Letter: 1
Question
1. Given a 2-by-5 integer array X, answer the following questions: (program is not required)
a. Write a definition (array declaration) for X
b. How many rows and columns does X have?
c. How many elements does X have?
d. Write the names of all the individual elements in the second row of array X (hint: see slide 13 of lecture 9)
e. Write the names of all the elements in the third column of array X
f. Write a single statement that sets the element of X in row 1 and column 2 (in the way C counts, not as humans do) to the value zero
Explanation / Answer
If we consider the language is c++
a. Write a definition (array declaration) for X
int x[2][5];
where 2 represent the rows
and 5 represent the columns
b. How many rows and columns does X have?
there are 2 rows and 5 columns.
Here is 2 by 5 representation:
c. How many elements does X have?
There are 2 * 5 = 10 elements in x
d. Write the names of all the individual elements in the second row of array X (hint: see slide 13 of lecture 9)
for(int i = 0 ; i < 5 ; i++)
{
cout << X[1][i] ;
}
print all the 2nd row element .
e. Write the names of all the elements in the third column of array X
for(int i = 0 ; i < 2 ; i++)
{
cout << X[i][2] ;
}
print all the 3nd column element .
f. Write a single statement that sets the element of X in row 1 and column 2 (in the way C counts, not as humans do) to the value zero
X[0][1] = 0;
set data Test to row 1 and column 2
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