Her er både det oprindelige program og tilføjelser, som sætter de ønskede parenteser:#include <stdio.h>
int main(void){
int a = 1, b = 2, c = 3;
double x = 1.0;
int res1, res2, res3, res4;
int res1_equiv, res2_equiv, res3_equiv, res4_equiv;
res1 = a > b && c < x;
res2 = a < ! b || ! ! a;
res3 = a + b < ! c + c;
res4 = a - x || b * c && b / a;
printf("res1 = %d, res2 = %d, res3 = %d, res4 = %d \n",
res1, res2, res3, res4);
res1_equiv = (a > b) && (c < x);
res2_equiv = (a < (! b)) || (! (! a));
res3_equiv = (a + b) < ((! c) + c);
res4_equiv = (a - x) || ((b * c) && (b / a));
printf("res1 = %d, res2 = %d, res3 = %d, res4 = %d \n",
res1_equiv, res2_equiv, res3_equiv, res4_equiv);
return 0;
}