O Level Internet of Things Paper July 2022 | Set 2
दिए गए C कोड का आउटपुट है:
The output of given C code is:
#include
int main ()
{
int x=1, y = 1, z;
z= x++ + y;
printf (“%d, %d”, x, y);
}
Let's analyze the given C code step by step:
Code:
#include
int main ()
{
int x = 1, y = 1, z;
z = x++ + y;
printf("%d, %d", x, y);
return 0;
}
Explanation:
-
int x = 1, y = 1, z;:
The variablesxandyare both initialized to 1. The variablezis declared but not initialized yet. -
z = x++ + y;:
Thex++is a post-increment operation. This means:- First,
xis used in the expression with its current value (which is 1). - After the expression is evaluated,
xis incremented by 1. - The value of
yis 1 (sinceywas initialized to 1). - So,
z= 1 (value ofx++) + 1 (value ofy) = 2. - After the operation,
xbecomes 2 (due to the post-increment), andyremains 1.
- First,
-
printf("%d, %d", x, y);:
Theprintfstatement will print the current values ofxandy, which are 2 and 1, respectively.
Output:
The output will be: "2, 1"
Thus, the correct answer is:
(B) x=2, y=1.
Correct Answer: B) x=2, y=1
दिए गए C कोड में, लूप के लिए निष्पादित होता है:
In the given C code, for loop executes for:
#include
void main ()
{
int x=10;
for ( ; ; ) { printf(“%d\n”,x):}
}
Let's analyze the given C code:
Code:
#include
void main() {
int x = 10;
for( ; ; ) {
printf("%d\n", x);
}
}
Explanation:
-
The
forloop here has no conditions, meaning it doesn't have a start, end, or increment condition. This is an infinite loop.- The empty loop structure (
for( ; ; )) means the loop will continue executing indefinitely unless there is some external condition (like abreakor other exit mechanism).
- The empty loop structure (
-
Inside the loop, the statement
printf("%d\n", x);will continuously print the value ofx, which is 10 in this case, on each iteration.
Conclusion:
Since the loop has no terminating condition, it will run indefinitely, printing the value of x (which is 10) continuously.
Thus, the output of this code will be an infinite loop.
Correct Answer:
(C) infinite.
Correct Answer: C) infinite
दिखाए गए अनुसार Arduino के साथ एक LED इंटरफ़ेस का तात्पर्य है:
A LED interfacing with Arduino as shown implies:
digitalWrite (led_pin, LOW);
digitalWrite (led_pin, HIGH);
ऐरे वाले C प्रोग्राम का सही विकल्प चुनें:
Choose the correct option of C program having array:
int main ()
{
int xyz (4) = [10,20,30,40];
printf (“%d”, xyz (1));
}
सरणी के चौथे तत्व तक पहुंचने के लिए सही विकल्प चुनें:
Choose the correct option to access the 4th element of the array :
int z [30];
int *pz;
pz = z;
एक सरणी सूचकांक, xyz [ ] _____ से शुरू होता है।
An array index, xyz [ ] starts with _____.
In C programming, array indices always start from 0. So, if we have an array like xyz[], the index of the first element will be 0, and the last index will be size - 1.
Correct Answer:
(A) 0.
Correct Answer: A) 0
दिए गए कोड के अनुक्रमण के लिए सही विकल्प चुनें:
Choose the correct option for indexing of the given code:
int main ()
{
int xyz (8);
return 0;
}
Let's analyze the code and the concept of indexing in C.
Code:
int main ()
{
int xyz[8];
return 0;
}
Explanation:
int xyz[8];declares an arrayxyzof 8 integers.- In C, arrays are 0-indexed, meaning the indices start from 0 and go up to
n-1wherenis the size of the array.
So, the valid indices for the array xyz with size 8 will be from 0 to 7.
Indexing:
- The first element will be at index 0.
- The last element will be at index 7.
Conclusion:
The correct indexing range for this array is 0 to 7.
Correct Answer:
(A) 0,7.
Correct Answer: A) 0,7