Compilare: main.cpp: In function 'int formare(char*, int&, char*)': main.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(s);i++) ~^~~~~~~~~~ main.cpp: In function 'void doi(char*, int&, char*, int&)': main.cpp:48:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(i<strlen(s)) ~^~~~~~~~~~ main.cpp: In function 'int suma(char*, int, char*)': main.cpp:87:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<strlen(s);i++) ~^~~~~~~~~~ main.cpp:89:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(strchr(st,s[i])==NULL) ^ main.cpp:86:14: warning: unused variable 'x' [-Wunused-variable] unsigned x; ^ main.cpp: In function 'int main()': main.cpp:114:15: warning: unused variable 'dim' [-Wunused-variable] const int dim=100; int sum=1; ^~~