Compilare: main.cpp: In function 'int main()': main.cpp:112:47: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d%d%d",&m,&n,&f,&dx,&dy); ^ main.cpp:116:54: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d%d%d",&x,&y,&x2,&y2,&cost); ^