What will be the output of the following Arduino code ?

निम्नलिखित Arduino कोड का आउटपुट क्या होगा?

void main() {
int k = 0;
double d = 10.21;
printf(“%lu”, sizeof(k + d));
}
void loop() {}

10.21

null

Explanation:

The given Arduino code is:

void main() {
    int k = 0;
    double d = 10.21;
    printf("%lu", sizeof(k + d));
}

void loop() {}

int k = 0; double d = 10.21;:
- k is an integer, and d is a double.
sizeof(k + d):
- In the expression k + d, k is promoted to double because arithmetic operations between integers and doubles result in a double type.
- The result of k + d will be a double.
sizeof(k + d):
- The sizeof operator returns the size of the resulting type of the expression.
- Since the result of k + d is a double, and the size of a double is 8 bytes on most systems, sizeof(k + d) will return 8.

(B) 8