Compilare: user.cpp: In function ‘int f1(int*, int, int, int, int)’: user.cpp:11:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(p == u) ^ user.cpp: In function ‘int f2(int*, int, int, int, int)’: user.cpp:26:7: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(p == u) ^ user.cpp: In function ‘int main()’: user.cpp:107:30: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &k); ^ user.cpp:111:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &x[i]); ^