Compilare: main.cpp: In function 'int main()': main.cpp:73:12: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 73 | while(p<strlen(s)) | ~^~~~~~~~~~ main.cpp:72:9: warning: unused variable 'lun' [-Wunused-variable] 72 | int lun=strlen(s); | ^~~