Compilare: main.cpp: In function 'int main()': main.cpp:31:16: warning: statement has no effect [-Wunused-value] 31 | r >> z >> y; | ~~~~~~~^~~~ main.cpp:32:9: warning: 'z' may be used uninitialized [-Wmaybe-uninitialized] 32 | if( z== 1) | ^~ main.cpp:27:17: note: 'z' was declared here 27 | int nr, i , z , y ,r,p; | ^ main.cpp:33:16: warning: 'y' may be used uninitialized [-Wmaybe-uninitialized] 33 | { r = y % m; | ~~^~~~~~~ main.cpp:27:21: note: 'y' was declared here 27 | int nr, i , z , y ,r,p; | ^