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注æï¼ä»¥ä¸ ââ¡âä¸ºç©ºæ ¼ï¼<CR>为å车
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¥æ°æ®çå½¢å¼ä¸ºï¼25,13,10 <CR>,æ£ç¡®çè¾åºç»æä¸ºï¼ ï¼
void main( )
{ int x,y,z;
scanf("%d%d%d",&x,&y,&z);
printf("x+y+z=%d\n",x+y+z);}
A) x+y+z=48 B) x+y+z=35 C) x+y+z=38 D) ä¸ç¡®å®å¼
2ãä¸é¢ç¨åºçè¾åºæ¯( )
void main()
{ int y=0;
while(y--);
printf("y=%d\n",y); }
A) y=0 B) while æææ éå¾ªç¯ C) y=-1 D) y=1
3ãå¨ä»¥ä¸åç»æ è¯ç¬¦ä¸ï¼åæ³çç¨æ·æ è¯ç¬¦æ¯( )ã
A) xy_ B) longdouble C) *p D) CHAR
åé1 signed history Float
4ã以ä¸è½æ£ç¡®è®¡ç®1*2*3â¦*10çç¨åºæ®µæ¯ï¼ ï¼
A) do { i=1;s=1;s=s*i;i++;}while (i<=10);
B) do {i=1;s=0;s=s*i;i++;} while(i<=10);
C) i=1;s=1; do{ s=s*i;i++;}while (i<=10);
D) i=1;s=0; do{ s=s*i;i++;}while (i<=10);
5ãå¨ä¸ååmçå¼ä¸ï¼è½ä½¿è¡¨è¾¾å¼m%3==2 &&m%5==3 && m%7==2为ççæ¯ï¼ ï¼
A) 8 B) 23 C)17 D) 6
6ãè¿è¡ä»¥ä¸ç¨åºå,å¦æä»é®çä¸è¾å
¥ china#<å车>,åè¾åºç»æ为( )
A) 2,3 B) 3,5
C) 5,2 D) 2,5
#include <stdio.h>
void main()
{ int v1=0,v2=0; char ch;
while((ch=getchar())!='#')
switch(ch)
{ case 'a':
case 'h': v1++;
default: v2++;
}
printf("%d,%d\n",v1, v2);
}
7ãæå¦ä¸ç¨åº
void main( )
{ int i,sum=0;
for(i=1;i<=3;sum++) sum+=i;
printf("%d\n",sum);
}
该ç¨åºçæ§è¡ç»ææ¯( )
A) 6 B) 3 C) æ»å¾ªç¯ D) 0
8ãè½æ£ç¡®è¡¨ç¤ºaåb åæ¶ä¸ºæ£æåæ¶ä¸ºè´çé»è¾è¡¨è¾¾å¼æ¯( )
A) (a>=0âb>=0)&&(a<0âb<0)
B) (a>=0&&b>=0)&&(a<0&&b<0)
C) (a+b>0)&&(a+b<=0)
D) a*b>0
9ãä¸åå®ä¹æ°ç»æ£ç¡®çæ¯ï¼ ï¼
Aï¼ #define size 10 B) int n=5;
char str1[size],str2[size+2]; int a[n][n+2];
C) char str[]; D) int num['10'];
10ã以ä¸ç¨åºçåè½æ¯è®¡ç®ï¼s= 1+1/2+1/3+⦠â¦+1/10
void main()
{ int n; float s
s=1.0;
for(n=10;n>1;n--)
s=s+1/n;
printf("%6.4f\n",s);
}
ç¨åºè¿è¡åè¾åºç»æé误ï¼å¯¼è´é误ç»æçç¨åºè¡æ¯
Aï¼s=1.0; Bï¼for(n=10;n>1;n--)
Cï¼s=s+1/n; Dï¼printf("%6.4f\n",s);
11ã以ä¸è¯´æ³æ£ç¡®çæ¯ï¼ ï¼
A) è¾å
¥é¡¹å¯ä»¥ä¸ºä¸ä¸ªå®å常éï¼å¦scanf("%f",3.5);
B) åªææ ¼å¼æ§å¶ï¼æ²¡æè¾å
¥é¡¹ï¼ä¹è½è¿è¡æ£ç¡®çè¾å
¥ï¼å¦scanf("a=%d,b=%d");
C) å½è¾å
¥ä¸ä¸ªå®åæ°æ®æ¶ï¼æ ¼å¼æ§å¶é¨ååºè§å®å°æ°ç¹åçä½æ°ï¼å¦scanf("%4.2f",&f);
D) å½è¾å
¥æ°æ®æ¶ï¼å¿
é¡»ææåéçå°åï¼å¦scanf("%f",&f);
12ã设x=2.5ãa=7,åç®æ¯è¡¨è¾¾å¼x+2*++a/3%3çå¼ä¸ºï¼ ï¼ã
Aï¼ 2.5 Bï¼3.5
Cï¼ 4.5 Dï¼5.5
13ãè¥æ说æï¼int a[3][4]={0}; åä¸é¢æ£ç¡®çåè¿°æ¯ï¼ ï¼
A) åªæå
ç´ a[0][0]å¯å¾å°åå¼0
B) æ¤è¯´æè¯å¥ä¸æ£ç¡®
C) æ°ç»aä¸ä¸ªå
ç´ é½å¯ä»¥å¾å°åå§å¼ï¼ä½å
¶å¼ä¸ä¸å®ä¸º0
D) æ°ç»aä¸ä¸ªå
ç´ é½å¯å¾å°åå¼0
14ã设a=3,b=4,c=5ï¼ åè¡¨è¾¾å¼ !(a+b)+c-1&&b+c/2çå¼ä¸ºï¼ ï¼ã
Aï¼6.5 Bï¼ 6
Cï¼ 0 Dï¼1
15ãå¨ä¸åæå
³#includeå½ä»¤çåè¿°ä¸ï¼é误çä¸æ¡æ¯ï¼ ï¼
Aï¼å¨#includeå½ä»¤ä¸ï¼æ件åå¯ä»¥ç¨åå¼å·æå°æ¬å·æ¬èµ·æ¥
B)å¨ä¸ä¸ªå
å«æ件ä¸åå¯ä»¥å
å«å¦ä¸ä¸ªè¢«å
å«æ件
Cï¼å¨ä¸ä¸ª#includeå½ä»¤ä¸å¯ä»¥æå®ä¸ä¸ªå
å«æ件
Dï¼å¨ä¸ä¸ª#includeå½ä»¤ä¸å¯ä»¥æå®å¤ä¸ªå
å«æ件
16ã以ä¸ä¸æ£ç¡®çifè¯å¥å½¢å¼æ¯ï¼ ï¼
A) if(x>y && x!=y);
B) if( x= = y) x+=y;
C) if (x!=y) scanf("%d",&x) else scanf("%d",&y);
D) if(x<y) {x++;y++;}
17ãæå¦ä¸ç¨åº
void main()
{ int x=1,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ç¨åºçè¾åºç»ææ¯
A) a=2,b=1 B) a=1,b=1
C) a=1,b=0 D) a=2,b=2
18ãé
读以ä¸ç¨åºï¼
void main()
{ int x;
scanf("%d",&x);
if(x--<5) printf("%d"ï¼x);
else printf("%d"ï¼x++);
}
ç¨åºè¿è¡åï¼å¦æä»é® çä¸è¾äºº5ï¼åè¾åºç»ææ¯
A)3 B) 4 C) 5 D) 6
19ã请é
读以ä¸ç¨åºï¼
void main( )
{ int a=5,b=0,c=0;
if(a=b+c) printf("***\n");
else printf("$$$\n");
}
以ä¸ç¨åºï¼ ï¼
A) æè¯æ³é误ä¸è½éè¿ç¼è¯ B) å¯ä»¥éè¿ç¼è¯ä½ä¸è½éè¿è¿æ¥`
C) è¾åº *** D) è¾åº$$$
20ãæ§è¡ä»¥ä¸ç¨åºæ®µæ¶ ï¼ ï¼
x=-1; do {x=x*x; } while(! x);
A) 循ç¯ä½å°æ§è¡ä¸æ¬¡ B) 循ç¯ä½å°æ§è¡ä¸¤æ¬¡
C) 循ç¯ä½å°æ§è¡æ é次 D) ç³»ç»å°æ示æè¯æ³é误
21ãè¥xæ¯intååéï¼ä¸æä¸é¢çç¨åºç段ï¼
for(x=3; x<6; x++) printf((x%2)?("**%d"):("##%d\n"),x);
ä¸é¢ç¨åºç段çè¾åºç»ææ¯
A) **3 B) ##3 C) ##3 D) **3##4
##4 **4 *4##5 **5
**5 ##5
22ã以ä¸åè¿°ä¸ä¸æ£ç¡®çæ¯( )ã
A. ä¸ä¸ªå¥½çç¨åºåºè¯¥æ详尽ç注é
Bï¼Cç¨åºä¸ç#includeå#defineåä¸æ¯Cè¯å¥
C. å¨Cç¨åºä¸ï¼èµå¼è¿ç®ç¬¦çä¼å
级æä½
D. å¨Cç¨åºä¸ï¼j++ï¼æ¯ä¸æ¡èµå¼è¯å¥äºã 填空é¢
1ãå
¶åæ æ/* */çè¯å¥çæ§è¡æ¬¡æ°æ¯ã ã
int y,i;
for(i=0;i<20;i++)
{
if(i%2==0) continue;
y+=i; /* */
}
2ãä¸é¢ç¨åºçåè½æ¯ä»é®çè¾å
¥ç10个æ°ä¸ï¼æ¾åºç¬¬ä¸ä¸ªè½è¢«7æ´é¤çæ°ãè¥æ¾å°ï¼æå°æ¤æ°åéåºå¾ªç¯ï¼è¥æªæ¾å°ï¼æå°"not exist"ã 请填空ã
main( )
{ int n,a;
for(n=1; n<=10; n++)
{ scanf("%d",&a);
if(a%7==0) { printf("%d",a); ã ã;}
}
if (n==ã ã) printf("not exist\n");
}
3ã设iãjãkå为intååéï¼åæ§è¡ä¸é¢è¯å¥åkçå¼ä¸ºã ãï¼
for(i=0, j=10, k=0; i<j; i++, j--)
k+=i+j;
4ã. 以ä¸ç¨åºæ¯è®¡ç®æå¹´æææå 天ãå¤æé°å¹´çæ¡ä»¶æ¯ï¼è½è¢«4æ´é¤ä½ä¸è¢«100æ´é¤æè½è¢«400æ´é¤ç年份为é°å¹´ã
void main( )
{ int yy,mm,len;
printf(âè¾å
¥å¹´ä»½åæ份:â);scanf(â%d%dâ,&yy,&&mm);
switch(mm)
{ case 1: case 3: case 5: case 7: case 8: case 10: case 12: len=31 ; break;
case 4: case 6: case 9: case 11: len=30; break;
case 2:
if(ã ã) len=29;
else len=28 ;
break;
default: printf(âè¾å
¥å¾æ份æ æ!\nâ);
}
printf(â%då¹´%dææ%d天\nâ, ã ã);
}
5ãä¸é¢ç¨åºè¯»å
¥20个æ´æ°ï¼ç¶åç»è®¡éè´æ°çå¹³åå¼ã
main ( )
{ int i, a[20], s, count;
s=count=0;
for ( i=0; i<20; i++ )
scanf (" %d" , ã ã );
for ( i=0; i<20; i++ )
if ( a[i]>=0 ) {ã ã; count++; }
printf ("ave=%f\n" , ã ã);
}
6ãä¸é¢ç¨åºä¸ºæ±æå°æ£æ´æ°nï¼ä½¿è°å级æ°ån项ä¹å大äºé¢å
ç»å®çå®æ°aã
> a,
main( ){
int n=0;
float s=0.0;
while (ã ã) { ã ã; n++; }
print("âææ±çæ°å¼ä¸º%f\n" ,s);
}
7ã设æ°ç»açå
ç´ å为æ£æ´æ°ï¼ä»¥ä¸ç¨åºæ¯æ±aä¸å¶æ°ç个æ°åå¶æ°çå¹³åå¼ã请填空ã
main( )
{ int a[10]={1,2,3,4,5,6,7,8,9,10}ï¼
int k,s i;float ave;
for(k=s=i=0; i<10;i++)
{ if ( a[i]%2 !=0) ã ã;
s+=ã ã;
k++;
}
if(k!=0) { ave=s/k; printf("%d,%d\n", k,ave);}
}
8ï¼ä¸é¢çç¨åºè¾åºæ¯ã ãã
void main( ) {
int a=7, b=5;
printf("%d\n",b=a/b);
}
9. è¥a=2,b=4,åè¡¨è¾¾å¼ !(x=a)||(y=b) && 0 çå¼æ¯ã ã.
10. ä¸é¢ç¨åºçè¿è¡ç»ææ¯ ã ãã
main()
{ int a[5][5],i,j,n=1;
for(i=0;i<5;i++)
for(j=0;j<5;j++) a[i][j]=n++;
printf("The result is \n");
for(i=0;i<3;i++)
{ for(j=0;j<=i;j++) printf("%3d",a[i][j]);
printf("\n");
}
}
11. .以ä¸ç¨åºå®ç°è¾åºx,y, zä¸ä¸ªæ°ä¸çæ大è
ã
void main( )
{ int x,y,z,u;
scanf(â%d%d%dâ,&x,&y,&z);
ifã ãu=z; else u=y;
ifã ã u=x;
printf(âæ大为:%d\nâ,u);
}
12ã以ä¸ç¨åºçè¿è¡ç»ææ¯ã ã
void main()
{ int a1,a2,b1,b2; int i=5,j=7,k=0;
a1 = !k; a2=i!=j;
printf("a1=%d\ta2=%d\n",a1,a2);
b1=k &&j; b2= k||j;
printf("b1=%d\tb2=%d\n",b1,b2);
}
13ãä¸é¢ç¨åºçè¿è¡ç»ææ¯ã ãã
void main()
{ int k,t,sum=0;
for(t=k=1; k<=10;)
{ sum+=t; ++k;
if(k%3==0) t=-k;
else t=k;
}
printf("sum=%d",sum);
}
14ãä¸é¢ç¨åºçåè½æ¯è¾å
¥5个æ´æ°ï¼ æ¾åºæ大æ°åæå°æ°æå¨çä½ç½®ï¼å¹¶æäºè
对è°ï¼ç¶åè¾åºè°æ´åç5个æ°ã请填空ã
void main()
{ int a[5], max,min,i,j.k;
for(i=0;i<5;i++) scanf("%d",&a[i]);
min=a[0];max=a[0];
for(i=1;i<5;i++)
if((a[i]<min) {min=a[i];ã ã;}
for(i=1;i<5;i++)
if((a[i]>max) {max=a[i];ã ã;}
ã ã;
printf("\n The position of min is : %3d\n",k);
printf("The position of max is: %3d\n",j);
for(i=0;i<5;i++) printf("%5d",a[i]);
}
15ãåéxä¸å°äº1ä¸å°äºï¼ï¼ç表达å¼æ¯ã ãã
16ãè¥æint â
°=10, j=0;
åæ§è¡å®è¯å¥if (j=0)â
°+ +; else â
°- -; ååéâ
°çå¼ä¸ºã ãã
17ãä¸é¢ç¨åºæ®µçè¿è¡ç»ææ¯ã ãã
x=2;
do { printf("*"); x--;} while(!x==0);
18ï¼è¾å
¥ä»¥ä¸æ°æ®ï¼
How are you?<å车>
åä¸é¢ç¨åºæ®µçæ§è¡ç»ææ¯: ã ãã
#include <stdio.h>
main( )
{ while (putchar(getchar( )) !='?');
}
19ãmain( )
{ int number=3;
while(âânumber>0) printf(â*%d,â, number);
printf(â**%dâ, number);
}
è¿ä¸ªç¨åºçè¾åºç»ææ¯ï¼ã ãã
20ï¼åæ°åææ°ç转æ¢å
¬å¼ä¸ºC=5/9*(F-32)ï¼å
¶ä¸C表示ææ°ç温度ï¼F表示åæ°ç温度ã以ä¸ç¨åºè¾åºä»åæ°0度å°åæ°300度ï¼æ¯é20度è¾åºä¸ä¸ªå¼ï¼è¯·å¡«ç©ºã
main( )
{ int upper, step;
float fahr=0, celsius;
upper=300; step=20;
while (fahr <upper)
{ ã ã ;
printf ("%4.Of, %6.1f\n", fahr, celsius);
ã ã ;
} }
21ãæ±ä¸åæ°åå20项ä¹å
main( )
{ int i,f1=1,f2=2; float s=0.0;
for(ã ã)
{ s=s+(float)f2/f1;
f2=f1+f2;
f1= ã ãã ;
}
printf("%f\n",s);
}
22ãç¨åºè¯»å
¥50个æ´æ°ï¼ç»è®¡éè´æ°ä¸ªæ°ï¼å¹¶è®¡ç®éè´æ°ä¹åã
#include " stdio.h"
main ( )
{ int i, a[50], s, count;
s=count=o;
for ( i=0; i<20; i++ )
scanf (" %d" , ã ã);
for ( i=0; i<20; i++ )
{ if ( a[i]<0 ) ã ã;
s += a[i];
count++;
}
printf ("s=%d\t count=%d\n" , s, count);
}
ä¸ãç¼ç¨é¢ï¼ç±»ä¼¼è¯¾æ¬ä¹ é¢ï¼å¦ï¼
1. æä¸é¢çè¿ä¼¼å
¬å¼è®¡ç®
s = 1/1 -1/2 +1/3 - ⦠+(-1)n-11/n +â¦
使误差å°äºç»å®çe .
(å
¶ä»ç¥)
åèçæ¡ï¼
ä¸ã å项éæ©é¢
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
D C D C B C C D A C D C D D D C A B D C D Cäºã 填空é¢
1 2 3 4 5 6
10
break
11 50 (yy%4==0&&yy%100!=0||yy%400==0)
yy, mm, len &a[i]
s=s+a[i]
(float)s/conut s<=a
s=s+1.0/n7 8 9 10 11 12
continue
a[i]
1 0 The result is:
1
6 7
11 12 13 z>y
x>u
a1=1 a2=1
b1=0 b2=113 14 15 16 17 18
sum=19
j=i
k=i
a[j]=max;a[k]=min; (x>=1) && ( x<10) 9 ** How are you?19 20 21 22
*2, *1 , **0 Celsius=5/9*(fahr-32)
fahr+=step i=1;i<=20;i++ f2-f1 &a[i]
continue ä¸ã ç¼ç¨é¢ ï¼çæ¡ä¸å¯ä¸!ï¼#define E 1E5
void main( )
{
int n=1,k=-1;
float s=0;
do{
k=-k;
s=s+(float)k/n;
n++;
while(n<=E);
printf(âs=%f\nâ, s2);
}
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