Question

Suppose we have a variable of type int named height. Which of the following lines reads a value from stdin and stores it in this variable?

a. scanf("%d", height)
b. scanf("%d", &height)
c. scanf("%s", height)
d. scanf("%s", &height)
e. scanf(height)

Answer 1

The correct code to read an integer from stdin and store it in the variable 'height' is 'scanf("%d", &height)', which is option b.

Step-by-step explanation:

To read a value from stdin (standard input) and store it in a variable of type int named height, the correct line of code would be: scanf("%d", &height). This line is represented by option b. The %d format specifier is used for int data types in C/C++. Importantly, the ampersand (&) is necessary before the variable name height to pass the address of variable to scanf, allowing it to store the input value in the correct memory location.