Compilare: user.cpp: In function ‘int main()’: user.cpp:54:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp:57:29: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&v[i]); ^ user.cpp:58:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.cpp:61:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&nr,&x); ^ user.cpp: In function ‘int _0(int, int, int)’: user.cpp:20:14: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] return m-1; ^ user.cpp: In function ‘int _1(int, int, int)’: user.cpp:33:14: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] return m-1; ^ user.cpp: In function ‘int _2(int, int, int)’: user.cpp:46:14: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] return m+1; ^ user.cpp: In function ‘int main()’: user.cpp:46:14: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] user.cpp:38:9: note: ‘m’ was declared here int m; ^ user.cpp:33:14: warning: ‘m’ may be used uninitialized in this function [-Wmaybe-uninitialized] return m-1; ^ user.cpp:25:9: note: ‘m’ was declared here int m; ^