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#include <stdio.h>
int main()
{
signed char n = -128;
signed char p = 0 -n;
printf("n = %d, p = %d\n", n, p);
return 0;
}
#include <stdio.h>
int main()
{
int n = 0x80000000;
int p = 0 - n;
printf("n = %d, p = %d\n", n, p);
return 0;
}