Compilare: main.cpp: In function 'int bfs(int, int)': main.cpp:35:13: warning: unused variable 'c' [-Wunused-variable] 35 | int i, n, c; | ^ main.cpp:56:1: warning: control reaches end of non-void function [-Wreturn-type] 56 | } | ^ main.cpp: In function 'int getnr()': main.cpp:70:18: warning: 'ch' is used uninitialized in this function [-Wuninitialized] 70 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp: In function 'int main()': main.cpp:70:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 70 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:68:8: note: 'ch' was declared here 68 | char ch; | ^~ main.cpp:70:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 70 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:68:8: note: 'ch' was declared here 68 | char ch; | ^~ main.cpp:70:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 70 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:68:8: note: 'ch' was declared here 68 | char ch; | ^~ main.cpp:70:18: warning: 'ch' may be used uninitialized in this function [-Wmaybe-uninitialized] 70 | while (!isdigit(ch)) | ~~~~~~~^~~~ main.cpp:68:8: note: 'ch' was declared here 68 | char ch; | ^~