Final answer:
To handle EOF using scanf(), compare the return value of scanf() to EOF in a loop. When scanf() encounters EOF, it will return EOF, signaling it's time to stop reading input.
Step-by-step explanation:
To handle EOF using scanf(), check if the function returns EOF.Scanf() returns the number of items successfully read or EOF on end of file or error. To handle EOF, compare the return value of scanf() to EOF in a conditional statement. For example
int value;
while(scanf("%d", &value) != EOF) {
// Process 'value'
}
This loop will terminate when an end of file condition is detected, or an input failure occurs, thereby letting you handle the EOF scenario cleanly within your program.The direct answer to your question is to use the return value of scanf(). When the end-of-file (EOF) is reached, scanf() returns EOF. You can compare the return value of scanf() with EOF to determine if the end-of-file has been reached.In more detail, the scanf() function returns the number of successful conversions. If the return value is less than the number of variables specified in the format string, it means that the end-of-file has been reached or there was an error. You can use a loop to repeatedly call scanf() until the end-of-file is reached, and break out of the loop when scanf() returns EOF.