C Programming Output Quiz

What will be the output of the following code snippet below? #include int main() { int arr[3] = {10, 20, 30}; printf("%d", arr[1]); return 0; }

• 10

• 20

• 30

• Garbage value

What will be the output of the following code snippet below? #include int main() { int arr[] = {1, 2, 3, 4, 5}; for (int i = 0; i int main() { int arr[5] = {2, 4, 6, 8, 10}; arr[2] = 12; printf("%d", arr[2]); return 0; }

• 6

• 12

• 10

• Compilation Error

What will be the output of the following code snippet below? #include <stdio.h>

int main() {

int arr[] = {1, 2, 3, 4, 5};

for (int i = 0; i < 5; i++)

printf("%d ", arr[i]);

return 0;

}

• A) 1 2 3 4 5

• B) 5 4 3 2 1

• C) Compilation error

• D) 0 0 0 0 0

What will be the output of the following code snippet below? #include int main() { int arr[] = {5, 10, 15, 20}; int *ptr = arr; printf("%d", *(ptr + 2)); return 0; }

• 5

• 10

• 15

• 20

What will be the output of the following code snippet below? #include <stdio.h>

int main() {

int arr[] = {4, 8, 12, 16};

printf("%lu", sizeof(arr));

return 0;

}

• 4

• 16

• 8

• 12

What will be the output of the following code snippet below? #include <stdio.h>

int main() {

int arr[3] = {1, 3, 5};

int *ptr = arr;

for (int i = 0; i < 3; i++)

printf("%d ", *(ptr + i));

return 0;

}

• A) 1 3 5

• B) 3 5 1

• C) 5 3 1

• D) Compilation error

What will be the output of the following code snippet below? #include #include int main() { int *arr = (int*) malloc(3 * sizeof(int)); arr[0] = 10; arr[1] = 20; arr[2] = 30; printf("%d", arr[1]); free(arr); return 0; }

• 10

• 20

• 30

• Undefined Behavior

What will be the output of the following code snippet below? #include void modify(int arr[]) { arr[1] = 50; } int main() { int arr[] = {10, 20, 30}; modify(arr); printf("%d", arr[1]); return 0; }

• 10

• 20

• 50

• Compilation Error

What will be the output of the following code snippet below? #include #include int main() { int *arr = (int*) calloc(3, sizeof(int)); printf("%d", arr[2]); free(arr); return 0; }

• 0

• Garbage Value

• 3

• Compilation Error

What will be the output of the following code snippet below? #include #include int* createArray() { int *arr = (int*) malloc(3 * sizeof(int)); arr[0] = 5; arr[1] = 10; arr[2] = 15; return arr; } int main() { int *ptr = createArray(); printf("%d", ptr[2]); free(ptr); return 0; }

• 5

• 10

• 15

• Compilation Error