How to Get Integer Input from Keyboard in C Language

To get an integer from stdin (the default is the keyboard), use the scanf function, specifying the %d format.
For example:

/*
Example: how to get an integer from user input in C language
*/

#include <stdio.h>
#include <stdlib.h>

int main() {
    int number;
    printf("Please enter a number: ");
    scanf("%d", &number);
    printf("number: %d", number);
    return 0;
}

output:

Please enter a number: 123
number: 123