In C language, you can use a for loop to find the factors of a number. You can start the loop at 1 and increment it until it reaches the number itself. Within the loop, you can use the modulus operator (%), which returns the remainder when one number is divided by another, to check if the current loop variable is a factor of the number. If the remainder is 0, then the current loop variable is a factor and can be printed or stored in an array.

Here's an example of C code that finds the factors of a number:

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#include <stdio.h> int main() {    int n, i;    printf("Enter a positive integer: ");    scanf("%d", &n);    printf("Factors of %d are: ", n);    for(i = 1; i <= n; ++i) {        if (n % i == 0) {            printf("%d ", i);        }    }    return 0; }

This code prompts the user to enter a positive integer, and then uses a for loop to iterate through all integers from 1 to the entered number. It checks if the current loop variable is a factor of the entered number by using the modulus operator. If it is, it prints the current loop variable as a factor.