Compilare: main.cpp: In function 'int main()': main.cpp:54:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses] while(in.get(v[i]) && v[i] != '\n' && v[i] != ' ' || i == 1) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~ main.cpp:100:15: warning: unused variable 'x1' [-Wunused-variable] int j,x1,y1,z1,t1; ^~ main.cpp:100:18: warning: unused variable 'y1' [-Wunused-variable] int j,x1,y1,z1,t1; ^~ main.cpp:100:21: warning: unused variable 'z1' [-Wunused-variable] int j,x1,y1,z1,t1; ^~ main.cpp:100:24: warning: unused variable 't1' [-Wunused-variable] int j,x1,y1,z1,t1; ^~ main.cpp: In function 'int sum(int, int, int, int)': main.cpp:11:15: warning: 'n' is used uninitialized in this function [-Wuninitialized] for(i=1; i<=n; i++) ~^~~ main.cpp:43:32: warning: 'nr' may be used uninitialized in this function [-Wmaybe-uninitialized] s -= nr*v[i]; ~~^~~~~ main.cpp:40:21: warning: 'op' may be used uninitialized in this function [-Wmaybe-uninitialized] if(op == 1) ^~ main.cpp:31:17: warning: 'ok' may be used uninitialized in this function [-Wmaybe-uninitialized] if(ok == 0) ^~ main.cpp: In function 'int main()': main.cpp:89:21: warning: 'op' may be used uninitialized in this function [-Wmaybe-uninitialized] if(op == 1) ^~ main.cpp:87:17: warning: 'ok' may be used uninitialized in this function [-Wmaybe-uninitialized] if(ok == 0) ^~