C-Array Questions and Answers
C-Array Questions and Answers
61. In case of a strictly lower triangular array which of the following is true.
- All the elements above diagonal element are zero.
- All the elements lower diagonal element and also the diagonal elements are zero.
- All the elements above diagonal element and also the diagonal elements are zero.
- All the elements lower diagonal elements are zero.
62. The total numberr of of non-zero elements in a lower triangular arrays with n rows is
- n
- (n+1) /2
- n(n+1)/2
- n+a
63. Which of the following declarations for a two dimentional integer type array called matrix for 3 rows and 5 columns ?
- int matrix [3] [5];
- int matrix [3, 5];
- int matrix [1+2] [2+3]
- Both a and c
64. Find the output
void main ( )
{
int a[2, 3] ={ (2, 3), (4, 5), (6, 7)};
printf("%d", a[0]);
}
void main ( )
{
int a[2, 3] ={ (2, 3), (4, 5), (6, 7)};
printf("%d", a[0]);
}
- 2 3
- Address of the array
- 2
- Compilation Error
65. Find the output
void main ( )
{
int arr[2]={(1, 2), (2, 3)};
printf("%d", sizeof (arr+1));
}
void main ( )
{
int arr[2]={(1, 2), (2, 3)};
printf("%d", sizeof (arr+1));
}
- 4
- Compilation error
- 8
- 2
66. which is the wrong one about array from the following ?
- sizeof () operator doesn't report the size of an array which is parameter to a function.
- Arrays are just constantj pointers.
- int a[20] is declaration cum definition.
- Memory allocation is static for an array.
67. Which of the following array initialization is not possible ?
- int 5[int]={1, 2, 3, 4, 5 };
- int a[5]={1, 2, 3, 4, 5};
- float a[ ]={'a','b','c','d','e'};
- int b[ ]={1, 2};
68. What will be the adjacent element of a [0][1] in the array a[2][2].
- a [0] [1]
- a [0] [0], a[1] [0], a[1] [1]
- a[0] [0], a[1] [1]
- a [0] [0], a[0] [1]
69. Array is which kind of data type.
- Fundamental data type.
- User-defined data type.
- Derived data type.
- It's not a data type
70. Choose the wrong one out of the following.
- int array [15]; Here array is not a valid identifier.
- All arrays except character array can not be read/displayed as a single entity, but the individual elements are read/displayed.
- the base address of an array is the address of the zeroth element (stanrting element)
- char str[20]; declares character array str having a maximum of 20 characters