case 1:a=b;D.switch(a==1) case 1:a=b; break; case 0:a++; 相关知识点: 试题来源: 解析 B [解析] 选项B中,switch语句中表达式“a==1”为“真”时,表达式取值1,程序流程转向case 1: a++;,与if(a==1) a=b; else a++;语句功能不同。结果...
下列程序的输出结果是 main() {int x=1,a=0,b=0; switch(x){ case 0: b++; case 1: a++; case 2: a++;b++; } cout<<"a="<<a<<"b="<<b<<endl; } A.a=2,b=1B.a=1,b=1C.a=1,b=0D.a=2,b=2 答案 A[解析] 本题主要考查switch语句中,break语句的作用。每个case...
“if(a==1)a=b;else a++;”代码段的功能是如果a等于则把b的值赋值给a,否则a++。选项A)使用switch对a进行判断,如果是1则a=b,跳出switvch,如果是其他值则a++;选项B)对a=1的结果进行switch判断,如果为0表示a不等于1则a=b,和题目要求不符合;选项C)和选项A)一样;选项D)和选项case条件相反,满足题目...
针对下面一个程序段:if((A>1) && (B==0))X = X/A;if((A==2)|| (X > 1))X++;选取测试用例:CASE 1: A=2 B=0 X
1. switch结构分支没加break;跳出语句,开始执行后,程序由x=1调到case 1 分支 a++(a由0自己加为1),由于没有break语句,程序继续执行到case 2 分支 a++ b++(a由1自加变2,b由0自加为1),之后程序printf输出 a=2 ,b=12.添加break后,结果是a=1,b=0#include "stdio.h"main(){ \x09int x=1,a=...
3以下程序的输出结果是 main() int a=0,i; for(i=1;i<5 i++) switch(i) case 0: case 3:a+=2; case 1: case 2:a+=3; default:a+=5; printf("%d\n", A.; A) 31B.13C.10D.20 4以下程序的输出结果是( )。 main() int a=0,i; for(i=1;i<5;i++) switch(i) casc 0:...
有如下程序 main() { int x=l,a=0,b=0; switch(x){ case 0:b++; case 1:a++; case 2:a++;b++;} printf("a=%d,b=%d\n",a,b); ) 该程序的输出结果是【 C 】 A. a=2,b=1 B. a=l,b=1 C. a=l,b=0 D. a=2,b=2 2一道C语言题30. 有如下程序 main() { int x=l...
On Saturday, February 11th, 1989, a 22-year-old pregnant woman, Joy Stewart, was last seen leaving the home of Juanita Deaton, the mother of her friend, Chris Deaton, at around noon in West Alexandria, Ohio. Also present was Dennis McGuire, who was hired
1 运行结果：a=2,b=1 2 分析：include <stdio.h> void main( ){ int x=1,y=0,a=0,b=0;switch(x) //x=1,执行后面的case 1分支 { case 1: //执行 switch(y) //y=0,执行后面的case 0分支 { case 0: a++; break; //执行，a=1,跳到后面的case ...
Case 1: Global developmental delay and seizures in a 34-month-old boy. Case 2: Ecchymoses on legs and refusal to walk in a 16-year-old ... Case 1: Global developmental delay and seizures in a 34-month-old boy. Case 2: Ecchymoses on legs and refusal to walk in a 16-year-old...