Compilare: user.cpp: In function ‘int main()’: user.cpp:12:5: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(int i=1;i<=n;i++) ^~~ user.cpp:15:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ int i=1; ^~~ user.cpp:9:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gauss.in","r",stdin); ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("gauss.out","w",stdout); ^ user.cpp:11:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:14:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf",&matrix[i][j]); ^