int main() { | |
int* pa = (int*) malloc(100); | |
int* pb = pa + 1; | |
int* pc = (int*) 0; | |
*pa = 1; | |
*pb = 2; | |
printf("Pointer difference: %d %d\n", pb - pa, ((int) pb) - ((int) pa)); | |
int c = * (pa + 1); | |
printf("Pointer addition: %d\n", c); | |
printf("Pointer comparison to zero: %d %d %d\n", pa == 0, pb == 0, pc == 0); | |
printf("Pointer comparison: %d %d %d %d %d\n", pa < pb, pa == pb, pa > pb, ! pb, ! pc); | |
free(pa); | |
return 0; | |
} | |