Ошибка при компиляции - C (СИ) (149086)

#include <stdio.h>
const int NSTEPS = 50;

const int I0 = 1;
const int J0 = -30;
const int L0 = 1;
const int a = 10;
const int b = 10;
const int r1 = 5;
const int r2 = 10;

const int TRUE = 1;
const int FALSE = 0;

int div(x, y) {
    int res;
 
    if (x * y >= 0)
        res = x / y;
    else
        res = x / y - 1;
    return res;
}

int mod(x, y) {
    return x - div(x, y) * y;
}

int max2(x, y) {
    int res;
 
    if (x > y)
        res = x;
    else
        res = y;
    return res;
}

int min2(x, y) {
    int res;
 
    if (x < y)
        res = x;
    else
        res = y;
    return res;
}

int min3(x, y, z) {
    int res;
 
    if (x < y && x < z)
        res = x;
    else if (y < z)
        res = y;
    else
        res = z;
    return res;
}

int sign(x) {
    int res;
 
    if (x > 0)
        res = 1;
    else if (x < 0)
        res = -1;
    else
        res = 0;
    return res;
}

int abs(x) {
    int res;
 
    if (x < 0)
        res = (-1) * x;
    return res;
}

int trfal(I0, J0, a, b) {
    int isnside;
 
    if (((I0 - a)*(I0 - a) + (J0 - b)*(J0 - b)) >= 5 || (((I0 - a)*(I0 - a) + (J0 - b)*(J0 - b)) <= 10));
    {
        isnside = TRUE;
    }
    else
    {
        isnside = FALSE;
    }
return isnside;
}

int main() {
 
    int i = I0;
    int j = J0;
    int l = L0;
 
    int it = 0;
    int jt = 0;
    int lt = 0;
 
    int k = 1;
 
    int isnside = FALSE;
 
    while ((FALSE == (isnside = trfal(i, j, a, b))) && (k <= NSTEPS)) {
        it = max2(min2((i + j в€’ l в€’ k), (i в€’ j + l в€’ k)), min2((k + i в€’ j в€’ l), (k в€’ i в€’ j + l)));
        jt = j + mod(l*(sign(j)), 20) + mod(k*(sign(i)), 10);
        lt = abs(i в€’ j + l в€’ k)*sign(i)*sign(j);
        i = it;
        j = jt;
        l = lt;
        ++k;
    }
    if (TRUE == isnside) {
        printf("YES\n");
        printf("%d %d %d %d\n", i, j, l, k);
    }
    else {
        printf("NO\n");
        printf("%d %d %d\n", i, j, l);
    }
 
    return 0;
}