Compilare: main.cpp: In function 'int parametru()': main.cpp:102:15: warning: array subscript has type 'char' [-Wchar-subscripts] r=sol[s[i]]; ^ main.cpp: In function 'int main()': main.cpp:120:21: warning: array subscript has type 'char' [-Wchar-subscripts] sol[c[0]]=0; ^ main.cpp:123:21: warning: array subscript has type 'char' [-Wchar-subscripts] sol[c[0]]=sol[c[0]]*10+c[i]-'0'; ^ main.cpp:123:31: warning: array subscript has type 'char' [-Wchar-subscripts] sol[c[0]]=sol[c[0]]*10+c[i]-'0'; ^ main.cpp:134:25: warning: NULL used in arithmetic [-Wpointer-arith] while(c[i]!=NULL){ ^~~~