Compilare: main.cpp: In function 'int main()': main.cpp:75:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d %d %d", &type, &n, &m); ^ main.cpp:78:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d", &ans1[i].r); ^ main.cpp:81:37: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d", &ans2[i].u); ^ main.cpp:85:46: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN, "%d %d", &v[i].r, &v[i].u); ^