Compilare: main.cpp: In function 'int main()': main.cpp:99:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ main.cpp:108:194: 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%d%d%d%d%d", &target.line, &target.column, &source1.line, &source1.column, &source2.line, &source2.column, &robot1.line, &robot1.column, &robot2.line, &robot2.column); ^ main.cpp:111:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &obstacles_no); ^ main.cpp:113:44: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d%d", &line, &column); ^