Compilare: main.cpp: In function 'int take_value()': main.cpp:19:15: warning: comparison of integer expressions of different signedness: 'long long int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 19 | while(pos < strlen(c) && isdigit(c[pos])){ | ~~~~^~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:26: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 72 | for(int i = 0; i < strlen(c); i++) cnt += (c[i] == '*'); | ~~^~~~~~~~~~~