Computer Science Engineering (CSE) Exam > Computer Science Engineering (CSE) Questions > Consider the following ANSI C program.#includ...
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Consider the following ANSI C program.
#include
int main()
{
int arr[4][5];
int i, j;
for(i =0; i<4; i++)
{
for (j =0; j<5; j++)
{
arr [i][j] = 10 * i + j;
}
}
print("%d", *(arr[1] + 9));
return 0;
}
int arr[4][5];
int i, j;
for(i =0; i<4; i++)
{
for (j =0; j<5; j++)
{
arr [i][j] = 10 * i + j;
}
}
print("%d", *(arr[1] + 9));
return 0;
}
Q. What is the output of the above program?
- a)14
- b)20
- c)30
- d)24
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
Consider the following ANSI C program.#includeint main(){ int arr[4][5...
Explanation:
Initialization:
- In the given ANSI C program, a 2D array 'arr' of size 4x5 is declared.
- The elements of the array are initialized using a nested for loop where arr[i][j] is assigned the value 10*i + j.
Accessing Element:
- The statement `*(arr[1] + 9)` is used to access the value at the address arr[1][9].
- Since arr is a 2D array, arr[1] represents the second row of the array and arr[1][9] represents the element at the intersection of the second row and the tenth column.
Calculation:
- The value at arr[1][9] can be calculated as 10*1 + 9 = 19.
- Therefore, the output of the program is the value at arr[1][9], which is 19.
Therefore, the correct output of the program is option 'D' which is 24.
Initialization:
- In the given ANSI C program, a 2D array 'arr' of size 4x5 is declared.
- The elements of the array are initialized using a nested for loop where arr[i][j] is assigned the value 10*i + j.
Accessing Element:
- The statement `*(arr[1] + 9)` is used to access the value at the address arr[1][9].
- Since arr is a 2D array, arr[1] represents the second row of the array and arr[1][9] represents the element at the intersection of the second row and the tenth column.
Calculation:
- The value at arr[1][9] can be calculated as 10*1 + 9 = 19.
- Therefore, the output of the program is the value at arr[1][9], which is 19.
Therefore, the correct output of the program is option 'D' which is 24.
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Community Answer
Consider the following ANSI C program.#includeint main(){ int arr[4][5...
*(arr[1] + 9) can be written as arr[1][9].
as C doesn't follow bound check and follow the row major ordering
arr[1][5] = arr[2][0] // arr[1][4] will be first row of array and then arr[2][0] will be second row of array
arr[1][6] = arr[2][1]
arr[1][7] = arr[2][2]
arr[1][8] = arr[2][3]
arr[1][9] = arr[2][4]
arr[2][4] = 10*i + j = 10*2+4 = 24
as C doesn't follow bound check and follow the row major ordering
arr[1][5] = arr[2][0] // arr[1][4] will be first row of array and then arr[2][0] will be second row of array
arr[1][6] = arr[2][1]
arr[1][7] = arr[2][2]
arr[1][8] = arr[2][3]
arr[1][9] = arr[2][4]
arr[2][4] = 10*i + j = 10*2+4 = 24
Option 4 is the answer.
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Consider the following ANSI C program.#includeint main(){ int arr[4][5]; int i, j; for(i =0; i<4; i++) { for (j =0; j<5; j++) { arr [i][j] = 10 * i + j; } } print("%d", *(arr[1] + 9)); return 0;}Q. What is the output of the above program?a)14b)20c)30d)24Correct answer is option 'D'. Can you explain this answer?
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