基本阅读程序题及答案.doc

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1、北京石油化工学院12级复习题基本输入输出7.#includemain(){inta=1,b=2;a=a+b;b=a-b;a=a-b;printf(“a=%d,b=%d”,a,b);}运行结果为：a=2,b=113.#includemain(){inta=3,b=4；intz=a+b；printf(“z=%d”,z);}运行结果为：z=717.#includemain(){intx,b0,b1,b2;printf("Pleaseenteranintegerx:");scanf("%d",&x);b2=x/10

2、0;b1=(x-b2*100)/10;b0=x%10;printf("bit0=%d,bit1=%d,bit2=%d",b0,b1,b2);}若输入352，运行结果为：bit0=2,bit1=5,bit2=3程序控制结构（顺序，分支，循环）1.#includemain(){inta=1,b=3,c=5;if(c==a+b)printf("yes");elseprintf("no");}运行结果为：no2.#includemain(){inta=12,b=-34,c=56,min=0;min=a;if(min>b)min=

3、b;if(min>c)min=c;printf("min=%d",min);}运行结果为：min=-343.#includemain(){intx=2,y=-1,z=5;if(xmain(){inta=10,b=50,c=30；if(a>b)a=b；b=c；c=a；printf("a=%db=%dc=%d",a,b,c)；}运行结果为：a=10b=30c=105.#includemain(){f

4、loata,b,c,t;a=3;b=7;c=1;if(a>b){t=a;a=b;b=t;}if(a>c){t=a;a=c;c=t;}if(b>c){t=b;b=c;c=t;}printf("%5.2f,%5.2f,%5.2f",a,b,c);}运行结果为：1.00,2.00,7.006.#includemain(){inta=2;floatnum=3.12,x;if(num<4)x=2*num*a;printf("resultis%f",x);}运行结果为："resultis12.48007.#includemain(){cha

5、rc=’A’;if((‘0’<=c)&&(c<=’9’))printf(“YES”);elseprintf(“NO”);}运行结果为：NO8．#includemain(){floatc=3.0,d=4.0;if(c>d)c=5.0;elseif(c==d)c=6.0;elsec=7.0;printf(“%.1f”,c);}运行结果为：7.09.#includemain(){inta=0,b=1,c=0,d=20；if(a)d=d-10；elseif(!b)if(!c)d=15；elsed=25；printf("d=%d",d

6、)；}运行结果为：d=2010.#includemain(){inta=2,b=3,c=1;if(a>b)if(a>c)printf(“%d”,a);elseprintf(“%d”,c);printf(“over!”);}运行结果为:over!11.#includemain(){intm;scanf("%d",&m);if(m>=0){if(m%2==0)printf("%disapositiveeven",m);elseprintf("%disapositiveodd",m);}else{if(m%2==0)p

7、rintf("%disanegativeeven",m);elseprintf("%disanegativeodd",m);}}若键入－9，则运行结果为:-9isanegativeodd13.#includemain(){intx,y,z;x=20,y=40,z=60;while(xmain(){intnum=0；while(num<=2){num++；printf("