求C语言高手帮忙解答 include#includevoid Q1(void){ printf(\"hello world。\\n\");return;}void Q2(void){ int a,b;scanf(\"%d%d\",&a,&b);int c=a+b,d=a-b;printf(\"%d%d\\n\",c,d);return;}void Q3(v.
1.判断X是否在区间『a,b』上,在VB中以哪个逻辑表达式是正确的 1.X>;a
编程从键盘输入两个整数分别给变量a和b,要求在不借助于其他变量的条件下,将变量a和b的值实现交换 #includeint main(){int a,b;scanf(\"%d%d\",&a,&b);a=a+b;b=a-b;a=a-b;printf(\"%d%d\",a,b);return 0;}