#include <stdio.h>

int main()
{
    int ctr = 0;

    ctr = ctr + 1; // increases counter to 1
    printf("Counter is at %d.\n", ctr);

    ctr = ctr + 1; // increases counter to 2
    printf("Counter is at %d.\n", ctr);

    ctr = ctr + 1; // increases counter to 3
    printf("Counter is at %d.\n", ctr);

    ctr = ctr + 1; // increases counter to 4
    printf("Counter is at %d.\n", ctr);

    ctr = ctr + 1; // increases counter to 5
    printf("Counter is at %d.\n", ctr);

    ctr = ctr - 1; // decreases counter to 4
    printf("Counter is at %d.\n", ctr);

    ctr = ctr - 1; // decreases counter to 3
    printf("Counter is at %d.\n", ctr);

    ctr = ctr - 1; // decreases counter to 2
    printf("Counter is at %d.\n", ctr);

    ctr = ctr - 1; // decreases counter to 1
    printf("Counter is at %d.\n", ctr);

    return 0;
}