Compilare: user.cpp: In function ‘int main()’: user.cpp:14:9: warning: unused variable ‘val1’ [-Wunused-variable] int val1=0,val2,val3,val4,val5,val6; ^ user.cpp:14:16: warning: unused variable ‘val2’ [-Wunused-variable] int val1=0,val2,val3,val4,val5,val6; ^ user.cpp:14:21: warning: unused variable ‘val3’ [-Wunused-variable] int val1=0,val2,val3,val4,val5,val6; ^ user.cpp:14:26: warning: unused variable ‘val4’ [-Wunused-variable] int val1=0,val2,val3,val4,val5,val6; ^ user.cpp:14:31: warning: unused variable ‘val5’ [-Wunused-variable] int val1=0,val2,val3,val4,val5,val6; ^ user.cpp:14:36: warning: unused variable ‘val6’ [-Wunused-variable] int val1=0,val2,val3,val4,val5,val6; ^ user.cpp:10:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc13.in","r",stdin); ^ user.cpp:11:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("joc13.out","w",stdout); ^ user.cpp:15:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&k); ^ user.cpp:17:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for(j=1;j<=n;j++) scanf("%d",&v[i][j]); ^