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作业下载 ccea.zju/clearn/

第 3 章作业. 作业下载 http://www.ccea.zju.edu.cn/clearn/. 交作业信箱 0076060@fa.zju.edu.cn. 作业只需交答案. 1. 假定所有变量均已正确定义，下列程序段运行后 y 的值是（ ）。 int a=10, y=10; if (a=0) y=y-1; else if(a>0)y=y+1;else y=y+y; A. 20 B. 11 C. 9 D. 0. 2. 下面的程序片段所表示的数学函数关系是（ ）。 y=-1;

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作业下载 ccea.zju/clearn/

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  1. 第3章作业 作业下载 http://www.ccea.zju.edu.cn/clearn/ 交作业信箱 0076060@fa.zju.edu.cn 作业只需交答案 1.假定所有变量均已正确定义，下列程序段运行后y的值是（ ）。 int a=10, y=10; if (a=0) y=y-1; else if(a>0)y=y+1;else y=y+y; A. 20 B. 11 C. 9 D. 0 2.下面的程序片段所表示的数学函数关系是（ ）。 y=-1; if(x!=0) if(x>0) y=1; else y=0; -1 (x<0) 1 (x<0) 0 (x<0) -1 (x<0) A. y= 0 (x=0) B. y= -1 (x=0) C. y= -1 (x=0) D. y= 1 (x=0) 1 (x>0) 0 (x>0) 1 (x>0) 0 (x>0

  2. 3. int i,a,b,c; for(i=0;i<a;i=i+1) switch(b) { case 1: if(c+i==5)printf("%c",'x'); else printf("%c",'y'); break; case 2: if(c+i<10)printf("%c",'y'); else printf("%c",'x'); break; default: printf("%c",'x'); } 问:(1)上述程序若要输出yyx, a,b,c的初值应为_________ (2)上述程序若要输出xy, a,b,c的初值应为_________

  3. 4.输入年year、月month和日day,计算该年的第几天。4.输入年year、月month和日day,计算该年的第几天。 void main() { int year,month,day,leap;scanf(“%d%d%d”,&year,&month,&day); leap=(____(1)______||year%400==0); switch(month){ case 12: day+=30; case 11: day+=31; case 10: day+=30; case 9: day+= (2) ; case 8: day+=31; case 7: day+=30; case 6: day+=31; case 5: day+=30; case 4: day+=31; case 3: day+= (3) ; case 2: day+=31; } printf("%d",day);}

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