=j;A)t/=5;*!A）1.4B）1C）2.0D)211.若intB)falsea=3,b=4;則執行c=a++>2||b-->=4之后，C)(flaot)11/3D)(int)(11.0/3+0.5)inta=1234；printf（"%2d",a）)(int)(x+y)(int)x+yint(x)+yC)int(x+y))))printf("%d",u);x,y;A）scanf("x%da=getch();b=getch();c=getch();B）scanf("x=%d%d",&x,&y);a=getch();b=getch();c=getch();22.如下程序：#include{intprintf("m=%d\n",m);}{)x=4.0,y;y=1.0/x;floatif(x<0.0)if(x<10.0)printf("%f\n",y);}25.設int（A）if(a)a=0,b=5,c=2;選擇可執行x++的語句是（（B）if(a=b)（D）if(!(b-c))（C）if(a=<b)inta,b,c,x;if(!a)if(c)A）3x--;if(b);B）4C）34D）3528.若N為整型變量，則for(N=10;N=0;N--);循環里的循環體被(intswitch(i+1)10:i++;break;11:++i;++i;break;default:i=i+1;}A）11B）13C）12D）14{intfori;(i=0;i<10;;<stdio.h>printf("%d",i);}31.C語句for(;;){{int)switch(x){}printf("a=%d,b=%d\n",a,b);}A）5和22和25和5intint]{1,2,3,4,5};B)intx[5];intx[5]{0};];D)gets("a");gets(''a'');scanf("%c",a);(C)scanf("%s",a);37.函數調用"strcat(strcpy(str1,str2),str3)"intinti;x[3][3]={1,2,3,4,5,6,7,8,9};",x[i][2-i]);for(i=0;i<3;i++)printf("%dintfun(intintx,y);y);intintfun(intfun(x,y);,int);D)intfun(intA）a+"B）r+"C）wb+"D）ab"44.已知：intA）intmalloc(sizeof(int));"語句動態申請int型的存儲單元，D）(int*)registerB）int*C）(*int)staticx,y=10,*p=&y;，則能使得x的值也等于10的語句是（{Intscore;scanf("__1___",&score);{case10:printf("A\n");break;case9:printf("A\n");break;case8:printf("B\n");break;case7:printf("C\n");break;case6:printf("D\n");break;____3___:printf("E\n",score);break;}}{scanf("%f%f%f",&a,&b,&c);a[]={1,3,5,7,9},*p=a;，則值為5的表達式是（printf("YES");printf("NO");}{inti,sum;{}while(i<=___7___);printf("%d\n",sum);}例如，當score[N][M]＝{{83.5,82,86,65,67}，{80，91.5，84,99,95}，{90.5,95,86,95,97}}#include<stdio.h>void__8___(intx,inty,floatcc[],floataa[][5]){inti,j;for(i=0;i<x;i++){for(j=0;j<y;j++)cc[i]+=aa[i][j];cc[i]/=y;}}{inti;staticfloatscore[N][M]={{83.5,82,86,65,67},{80,91.5,84,99,95},{90.5,95,86,95,97}};float__9___[N];for(i=0;i<N;i++)bb[i]=0;for(i=0;i<N;i++)printf("\nstudent%d\taverage=%5.1f",i+1,bb[i]);printf("\n");}{intn,i,flag;for(i=2;i<n;i++)if(n%i==0){flag=0;}if(flag!=0)printf("yes");printf("no");}main（）inta,b;int*p_1,*p_2;printf("%d%d",*p_1,*p_2);運行結果____12_____,____13______{intm,n;{printf("___15___");}}#include<stdio.h>intmain(){inti;doubles=0;for(i=20;i<=30;i++)s=s+pow(i,1.0/3);//如果平方根改為s=s+sqrt(i);printf("%.2f\n",s);return0;}#include<stdio.h>intmain(){inta