Compilare: main.cpp: In function 'int promote(int)': main.cpp:28:1: warning: control reaches end of non-void function [-Wreturn-type] 28 | } | ^ main.cpp: In function 'int main()': main.cpp:84:24: warning: 'r' may be used uninitialized [-Wmaybe-uninitialized] 84 | r = promote(r); | ~~~~~~~^~~ main.cpp:73:17: note: 'r' was declared here 73 | int r; | ^