Compilare: main.c: In function 'main': main.c:6:12: warning: variable 'fptr1' set but not used [-Wunused-but-set-variable] FILE * fptr1; ^~~~~ main.c:13:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fptr,"%d",&teste); ^~~~~~~~~~~~~~~~~~~~~~~~ main.c:14:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fptr,"%d %d",&port1, &port2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:15:5: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(fptr,"%d %d",&ban1, &ban2); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~