ch=(ch>='A'&&ch
CH3-CH=CH-CH=CH-CH3是否存在?
速求: 设char ch='A'则表达式“ch=(ch>='A'&&ch
C语言~main( ) { char ch; ch=getchar( ); if (ch>='A' && ch
设ch是char型变量,下列表达式ch=(ch>='A'&&ch
设ch是char型变量,其值'M',表达式ch!=(ch>='A'&&ch
设ch是字符型变量其值为A表达式ch!=(ch>=A&&ch=A&&ch
CH3-CH=CH-C≡CH 如何命名?
main() { char ch; ch='H'-'A'+'0'; printf("%c\n",ch); }
CH2=CH-CH=CH2
CH3CH=CH-CH=CH2 + Br2?
CH3-CH=CH-CH3命名
CH2=CH-CH(CH3)-CH2OH是什么?