To read 20 values into an array using scanf, utilize a for loop coupled with a do-while loop for range validation. The scanf function reads formatted input from the user, and arrays are manipulated through indexed element access.
Implement the Array Reading
To read 20 different values into an array using scanf, you can use a loop structure like a for loop in C programming. Here's an example of how you might write the code:
int values[20];
for(int i = 0; i < 20; i++) {
do {
printf("Enter value %d (0-100): ", i+1);
scanf("%d", &values[i]);
} while(values[i] < 0 || values[i] > 100);
}
Describe the scanf Function
The scanf function is used for input in C. It reads formatted input from stdin (standard input, usually the keyboard). For example, scanf("%d", &variable) reads an integer value from the user and stores it in variable.
Explain the Loop Structure
The loop structure used here is a for loop which repeats a set of commands a specific number of times. We use a do-while loop inside the for loop to ensure that the user enters a value within the specified range (0-100).
Discuss Array Manipulation
Array manipulation refers to accessing and modifying the elements of an array. Once the values are read into the array, they can be manipulated by accessing them using their index, such as values[0] to access the first element of the array.