Compilare: main.cpp: In function 'int verif(char*, int)': main.cpp:14:13: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] 14 | vf[len]=NULL; | ^~~~ main.cpp: In function 'int main()': main.cpp:52:23: warning: NULL used in arithmetic [-Wpointer-arith] 52 | while(par[i]!=NULL) | ^~~~ main.cpp:43:16: warning: unused variable 'i' [-Wunused-variable] 43 | int nr,n,q,i,j,ok,len; | ^