Compilare: user.cpp: In function ‘void bkt(int, int, int, int)’: user.cpp:17:9: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(sum>=0) ^ user.cpp: In function ‘int main()’: user.cpp:44:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d%d" ,&k,&s,&n); ^ user.cpp:47:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d" ,&mat[i][j]); ^