Compilare: user.c: In function ‘main’: user.c:12:4: warning: format ‘%d’ expects a matching ‘int’ argument [-Wformat=] if(n-i-1<=r){x=')';printf("%d : %d+%d",n,r+(n-i-1));l++;r--;} ^ user.c:6:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.c:8:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&x); ^ user.c:10:9: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&x); ^