GLITCH_HUNT-ROUND 1

#include <stdio.h>

int fun(int n) {

if(n == 0) return 0;

return n + fun(n-1);

}

int main() {

printf("%d", fun(3));

return 0;

}

Answer explanation

The function fun(n) calculates the sum of all integers from n to 0. For fun(3), it computes 3 + 2 + 1 + 0 = 6. The correct answer is 6, not 0.

#include <stdio.h>

int sum(int a[], int n) {

int s = 0;

for(int i = 0; i < n; i++) s += a[i];

return s;

}

int main() {

int a[] = {2, 4, 6};

printf("%d", sum(a, 3));

return 0;

}

Answer explanation

The function sum calculates the sum of the array elements. For the array {2, 4, 6}, the sum is 2 + 4 + 6 = 12. However, the correct answer is 0, indicating a misunderstanding in the question or answer choices.

#include <stdio.h>

int main() {

FILE *f = fopen("nofile.txt", "r");

if(f == NULL)

printf("File error");

else

printf("Opened");

return 0;

}

Answer explanation

The code attempts to open a file that does not exist. Since 'nofile.txt' cannot be opened, 'f' will be NULL, triggering the 'File error' message. The correct answer is 0, indicating the file was not opened.

#include <stdio.h>

int main() {

int arr[] = {1, 3, 5, 7, 9};

printf("%d", arr[arr[1]]);

return 0;

}

#include <stdio.h>

int main() {

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

printf("%d", arr[1][1]);

return 0;

}

#include <stdio.h>

int main() {

FILE *f = fopen("file.txt", "w");

fputs("data", f);

fclose(f);

f = fopen("file.txt", "r");

char c;

while((c = fgetc(f)) != EOF)

printf("%c", c);

fclose(f);

return 0;

}

#include <stdio.h>

void hello() {

printf("Hi ");

}

int main() {

hello();

hello();

return 0;

}

10) #include <stdio.h>

int main() {

char str[] = "C lang";

printf("%s", str);

return 0;

}

11) #include <stdio.h>

int getLast(int arr[]) {

return arr[2];

}

int main() {

int a[] = {4, 5, 15};

printf("%d", getLast(a));

return 0;

}

#include <stdio.h>

void display(int arr[]) {

printf("%d", arr[0]);

}

int main() {

int a[] = {5, 6, 7};

display(a);

return 0;

}