按顺序输入2个整数给x,y,然后用双分支if语句按由小到大的顺序输出。 #include "stdio.h" int main() { int x,y; scanf("%d%d", &x,&y); if( (1) ) printf("%d,%d ", x,y); (2) printf("%d,%d ", y,x); }
举一反三
- 从键盘输入一个数给浮点型变量x,然后用双分支if语句求出x的绝对值y,最后输出y的值。 #include "stdio.h" int main() { float x,y; scanf("%f", &x); if(x>=0) (1) ; (2) y=-x; printf("%f\n", y); }
- #include "stdio.h" int main() { int x,y, (1) ; scanf("%d%d%d", &x,&y,&z); if(x>=y) (2) ; (3) max=y; if( (4) ) max=z; printf("%d\n",max); }
- 以下程序没有语法问题的是() A: B: include<;stdio.h>;int main( ){int x , y = 5 ; printf( "%d\n" , x / y ) ; return 0 ;} C: D: include<;stdio.h>;int main( ){int x = 3 ;y = 5 ; printf( "%d\n" , x / y ) ; return 0 ;} E: F: include<;stdio.h>;int main( ){int x = 3 ,y ; printf( "%d\n" , x / y ) ;y = 5; return 0 ;} G: H: include<;stdio.h>;int main( ){int x = 3 , y = 5 ; printf( "%d\n" , x / y ) ; return 0 ;}
- 如下程序的输出是什么? #include [stdio.h] void Swap (int x, int y); int main() { int x = 1; int y = 2; printf ("x=%d,y=%d\n", x, y); Swap (x, y); printf ("x=%d,y=%d", x, y); } void Swap (int x, int y) { int temp; temp = x; x = y; y = temp; printf ("x=%d,y=%d\n", x, y); } A: x=1,y=2x=2,y=1x=2,y=1 B: x=1,y=2x=1,y=2x=2,y=1 C: x=1,y=2x=2,y=1x=1,y=2 D: x=1,y=2x=1,y=2x=1,y=2
- 如下程序的输出是什么? #include <stdio.h> void Swap (int x, int y);int main() { int x = 1; int y = 2; printf ("x=%d,y=%d\n", x, y); Swap (x, y); printf ("x=%d,y=%d", x, y); } void Swap (int x, int y) { int temp; temp = x; x = y; y = temp; printf ("x=%d,y=%d\n", x, y); }? x=1,y=2x=2,y=1x=2,y=1|x=1,y=2x=1,y=2x=2,y=1|x=1,y=2x=2,y=1x=1,y=2|x=1,y=2x=1,y=2x=1,y=2