read from stdin c

To read from stdin in C, you can use the scanf function. Here's an example:

#include <stdio.h>

int main() {
    int num;
    printf("Enter a number: ");
    scanf("%d", &num);
    printf("You entered: %d\n", num);
    return 0;
}

In this example, the scanf function is used to read an integer from the user's input. The %d format specifier is used to specify that an integer should be read. The &num is used to pass the address of the num variable to scanf, so that it can store the entered value there.

After reading the input, the program prints the entered number using the printf function.

You can run this program and try entering different numbers to see how it works.