Compilare: main.c:89:6: warning: return type of 'main' is not 'int' [-Wmain] void main() ^~~~ main.c: In function 'main': main.c:95:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d", &n,&r); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:98:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",tata+i); ^~~~~~~~~~~~~~~~~~~~~ main.c:114:9: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&j,&k); ^~~~~~~~~~~~~~~~~~~~~~