Eroare de compilare: user.c: In function ‘cmmdc’: user.c:7:9: error: lvalue required as left operand of assignment cmmdc = b; ^ user.c:9:5: warning: assignment makes integer from pointer without a cast [enabled by default] a = cmmdc; ^ user.c:11:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.c: In function ‘main’: user.c:19:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n); ^