/in/foo.c: In function 'main':
/in/foo.c:7:12: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
     int *p=(float*)malloc(12*n);
            ^
/in/foo.c:9:13: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
     int *pi=(float*)malloc(4*n);
             ^