Compilare: main.cpp: In function 'int main()': main.cpp:22:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 22 | for(i=0;i<strlen(s);i++) | ~^~~~~~~~~~ main.cpp:50:18: warning: converting to non-pointer type 'char' from NULL [-Wconversion-null] 50 | solutie[i] = NULL; | ^~~~ main.cpp:14:9: warning: unused variable 'sol' [-Wunused-variable] 14 | int sol=0, i, p=1, n, k, c; | ^~~ main.cpp:14:19: warning: unused variable 'p' [-Wunused-variable] 14 | int sol=0, i, p=1, n, k, c; | ^ main.cpp:14:30: warning: unused variable 'c' [-Wunused-variable] 14 | int sol=0, i, p=1, n, k, c; | ^