Compilare: user.cpp: In function ‘int main()’: user.cpp:26:18: warning: unused variable ‘sw’ [-Wunused-variable] int maxs, mins, sw = 0, i, j, mij, sol = 0; ^~ user.cpp:26:32: warning: unused variable ‘mij’ [-Wunused-variable] int maxs, mins, sw = 0, i, j, mij, sol = 0; ^~~ user.cpp:19:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d%d", &n, &k); ^ user.cpp:21:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f1, "%d", &v[i]); ^