Eroare de compilare: user.c: In function ‘main’: user.c:10:9: error: ‘i’ undeclared (first use in this function) for(i=0;i<n;fscanf(f,"%c",&x),x=="("?a++,i++:b++,i++); ^ user.c:10:9: note: each undeclared identifier is reported only once for each function it appears in user.c:10:36: warning: comparison between pointer and integer [enabled by default] for(i=0;i<n;fscanf(f,"%c",&x),x=="("?a++,i++:b++,i++); ^ user.c:10:36: warning: comparison with string literal results in unspecified behavior [-Waddress] user.c:10:53: warning: left-hand operand of comma expression has no effect [-Wunused-value] for(i=0;i<n;fscanf(f,"%c",&x),x=="("?a++,i++:b++,i++); ^ user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^