Compilare: main.cpp: In function 'int32_t main()': main.cpp:37:54: warning: 'firstb' may be used uninitialized [-Wmaybe-uninitialized] 37 | l1=sqrt(abs((firsta-lasta)*(firsta-lasta)+(firstb-lastb)*(firstb-lastb))); | ~~~~~~~^~~~~~~ main.cpp:11:49: note: 'firstb' was declared here 11 | double suma=0, a, b, lasta, lastb, firsta, firstb; | ^~~~~~ main.cpp:37:24: warning: 'firsta' may be used uninitialized [-Wmaybe-uninitialized] 37 | l1=sqrt(abs((firsta-lasta)*(firsta-lasta)+(firstb-lastb)*(firstb-lastb))); | ~~~~~~~^~~~~~~ main.cpp:11:41: note: 'firsta' was declared here 11 | double suma=0, a, b, lasta, lastb, firsta, firstb; | ^~~~~~ main.cpp:37:54: warning: 'lastb' may be used uninitialized [-Wmaybe-uninitialized] 37 | l1=sqrt(abs((firsta-lasta)*(firsta-lasta)+(firstb-lastb)*(firstb-lastb))); | ~~~~~~~^~~~~~~ main.cpp:11:34: note: 'lastb' was declared here 11 | double suma=0, a, b, lasta, lastb, firsta, firstb; | ^~~~~ main.cpp:37:24: warning: 'lasta' may be used uninitialized [-Wmaybe-uninitialized] 37 | l1=sqrt(abs((firsta-lasta)*(firsta-lasta)+(firstb-lastb)*(firstb-lastb))); | ~~~~~~~^~~~~~~ main.cpp:11:27: note: 'lasta' was declared here 11 | double suma=0, a, b, lasta, lastb, firsta, firstb; | ^~~~~