Compilare: main.cpp: In function 'void read()': main.cpp:45:27: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 45 | for (int j = 0; j < strlen(line); ++j) { | ~~^~~~~~~~~~~~~~ main.cpp:37:10: warning: unused variable 'x' [-Wunused-variable] 37 | char x, line[Nmax]; | ^