Compilare: user.cpp: In function ‘int main()’: user.cpp:3:149: warning: unused variable ‘x’ [-Wunused-variable] int a[1001][1001],p1[1001],p2[1001],n;int main(){ freopen("noname.in","r",stdin); freopen("noname.out","w",stdout); scanf("%d",&n); int x;for(int i=1;i<=n;++i){scanf("%d",&p1[i]);}for(int i=1;i<=n;++i){scanf("%d",&p2[i]);}for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)if(p1[i]+p2[j]>n) a[i][j]=1;else a[i][j]=0;printf("1\n");for(int i=1;i<=n;++i){for(int j=1;j<=n;++j)printf("%d ",a[i][j]);printf("\n");}} ^ user.cpp:3:84: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] int a[1001][1001],p1[1001],p2[1001],n;int main(){ freopen("noname.in","r",stdin); freopen("noname.out","w",stdout); scanf("%d",&n); int x;for(int i=1;i<=n;++i){scanf("%d",&p1[i]);}for(int i=1;i<=n;++i){scanf("%d",&p2[i]);}for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)if(p1[i]+p2[j]>n) a[i][j]=1;else a[i][j]=0;printf("1\n");for(int i=1;i<=n;++i){for(int j=1;j<=n;++j)printf("%d ",a[i][j]);printf("\n");}} ^ user.cpp:3:121: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] int a[1001][1001],p1[1001],p2[1001],n;int main(){ freopen("noname.in","r",stdin); freopen("noname.out","w",stdout); scanf("%d",&n); int x;for(int i=1;i<=n;++i){scanf("%d",&p1[i]);}for(int i=1;i<=n;++i){scanf("%d",&p2[i]);}for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)if(p1[i]+p2[j]>n) a[i][j]=1;else a[i][j]=0;printf("1\n");for(int i=1;i<=n;++i){for(int j=1;j<=n;++j)printf("%d ",a[i][j]);printf("\n");}} ^ user.cpp:3:140: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int a[1001][1001],p1[1001],p2[1001],n;int main(){ freopen("noname.in","r",stdin); freopen("noname.out","w",stdout); scanf("%d",&n); int x;for(int i=1;i<=n;++i){scanf("%d",&p1[i]);}for(int i=1;i<=n;++i){scanf("%d",&p2[i]);}for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)if(p1[i]+p2[j]>n) a[i][j]=1;else a[i][j]=0;printf("1\n");for(int i=1;i<=n;++i){for(int j=1;j<=n;++j)printf("%d ",a[i][j]);printf("\n");}} ^ user.cpp:3:191: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int a[1001][1001],p1[1001],p2[1001],n;int main(){ freopen("noname.in","r",stdin); freopen("noname.out","w",stdout); scanf("%d",&n); int x;for(int i=1;i<=n;++i){scanf("%d",&p1[i]);}for(int i=1;i<=n;++i){scanf("%d",&p2[i]);}for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)if(p1[i]+p2[j]>n) a[i][j]=1;else a[i][j]=0;printf("1\n");for(int i=1;i<=n;++i){for(int j=1;j<=n;++j)printf("%d ",a[i][j]);printf("\n");}} ^ user.cpp:3:233: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] int a[1001][1001],p1[1001],p2[1001],n;int main(){ freopen("noname.in","r",stdin); freopen("noname.out","w",stdout); scanf("%d",&n); int x;for(int i=1;i<=n;++i){scanf("%d",&p1[i]);}for(int i=1;i<=n;++i){scanf("%d",&p2[i]);}for(int i=1;i<=n;++i)for(int j=1;j<=n;++j)if(p1[i]+p2[j]>n) a[i][j]=1;else a[i][j]=0;printf("1\n");for(int i=1;i<=n;++i){for(int j=1;j<=n;++j)printf("%d ",a[i][j]);printf("\n");}} ^