My first C program that does anything

graph.c

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

void main()
{
    int range;
    printf("Horizontal range: ");
    scanf("%d",&range);

    int vrange;
    printf("Vertical range: ");
    scanf("%d",&vrange);

    int i;
    for(i= -range;i<range;i++) {
        printf("%03d  ",i);

        int d;
        int val=i; //change 'i' to graph anything else

        //floor val
        if (val>vrange){
            val=vrange;
        }

        for(d=-vrange-1;d<val;d++) {
            if (i == 0) {
                printf("-");
            } else if(d == 0) {
                printf("|");
            } else {
                printf(" ");
            }
        }

        if (d<-vrange) {
            printf(" ");
        } else if (d>=vrange) {
            //basically do nothing
        } else {
            printf("x");
        }

        for(d=d+1;d<vrange;d++) {
            if (i == 0) {
                printf("-");
            } else if(d == 0) {
                printf("|");
            } else {
                printf(" ");
            }
        }

        printf("\n");
    }
}