Eroare de compilare: main.cpp: In function 'int main()': main.cpp:65:33: error: 'fabs' was not declared in this scope if (fabs(a[i][j])<=1e-14 && fabs(a[i][m+1])>1e-14) ^ main.cpp:17:39: 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); ^ main.cpp:18:41: 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); ^ main.cpp:20:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ main.cpp:26:39: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ Non zero exit status: 1