Compilare: user.cpp: In function ‘void solve()’: user.cpp:70:9: warning: variable ‘a’ set but not used [-Wunused-but-set-variable] int a, b, x; ^ user.cpp:70:12: warning: variable ‘b’ set but not used [-Wunused-but-set-variable] int a, b, x; ^ user.cpp: In function ‘void readFile()’: user.cpp:101:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &t); ^ user.cpp:108:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &v[1]); ^ user.cpp:115:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[j]); ^ user.cpp: In function ‘void solve()’: user.cpp:86:17: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(x == 1) ^