Compilare: main.cpp: In function 'int main()': main.cpp:76:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d\n",&n,&m); ^ main.cpp:81:35: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fgets(t[i] + 1,MMAX + 5,f); ^ main.cpp:88:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&k); ^ main.cpp:92:54: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d %d %d %d\n",&x,&y,&xx,&yy,&c); ^