Compilare: user.c: In function ‘cmmdc2’: user.c:27:9: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(n==0&m==0) ^ user.c: In function ‘main’: user.c:14:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&m); ^ user.c:15:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.c: In function ‘cmmdc2’: user.c:39:1: warning: control reaches end of non-void function [-Wreturn-type] } ^