pomi.cpp: In function `int main()': pomi.cpp:23: warning: NULL used in arithmetic pomi.cpp:25: warning: NULL used in arithmetic pomi.cpp: In function `int suma(int*, int)': pomi.cpp:64: warning: control reaches end of non-void function pomi.cpp: In function `int dif(int*, int)': pomi.cpp:78: warning: control reaches end of non-void function pomi.cpp: In function `int dif2(int*, int*, int*)': pomi.cpp:91: warning: control reaches end of non-void function