内容发布更新时间 : 2024/12/23 23:53:12星期一 下面是文章的全部内容请认真阅读。
4.
#include
{ float a,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(\}
运行结果为:1.00, 2.00, 7.00 5.
#include < stdio .h > main ( )
{ float c=3.0 , d=4.0; if ( c>d ) c=5.0; else
if ( c==d ) c=6.0; else c=7.0;
printf ( “%.1f\\n”,c ) ; }
运行结果为:7.0 6.
#include
{ if (m % 2 == 0) printf(\
else printf(\}
若键入-9,则运行结果为: -9 is a negative odd
7.
#include
{ int num=0;
while(num<=2){ num++;printf(\;} }
运行结果为: 1 2 3 8.
#include
{ int sum=10,n=1;
while(n<3) {sum=sum-n; n++; } printf(“%d,%d”,n,sum); }
运行结果为:3,7 9.
#include
{ int num,c;
scanf(\
do {c=num; printf(\ }while((num/=10)>0); printf(\ }
从键盘输入23,则运行结果为:32 10
#include
{ int s=0,a=5,n; scanf(\
do { s+=1; a=a-2; }while(a!=n); printf(\,%d\\n\ }
若输入的值1,运行结果为: 2,1
11.
#include \ main() {char c; c=getchar();
while(c!='?') {putchar(c); c=getchar(); } }
如果从键盘输入abcde?fgh(回车) 运行结果为:abcde
12.
#include
while((c=getchar())!=’$’)
{ if(‘A’<=c&&c<=‘Z’) putchar(c);
else if(‘a’<=c&&c<=‘z’) putchar(c-32); }
当输入为ab*ABí#CD$时,运行结果为:ABABCDCD
13.
#include
{ int x, y =0;
for(x=1;x<=10;x++)
{ if(y>=10)
break; y=y+x; }
printf(“%d %d”,y,x); }
运行结果为:10 5 14.
#include
ch=getchar( ); switch(ch)
{ case ‘A’ : printf(“%c”,’A’);
case ‘B’ : printf(“%c”,’B’); break; default: printf(“%s\\n”,”other”); } }
当从键盘输入字母A时,运行结果为:AB
} 15.
#include
{ int a=1,b=0; scanf(“%d”,&a);
switch(a)
{ case 1: b=1;break; case 2: b=2;break; default : b=10;} printf(\; }
若键盘输入5,运行结果为:10 16.
#include
{ char grade=’C’; switch(grade)
{ case ‘A’: printf(“90-100\\n”); case ‘B’: printf(“80-90\\n”);
case ‘C’: printf(“70-80\\n”);
case ‘D’: printf(“60-70\\n”); break; case ‘E’: printf(“<60\\n”); default : printf(“error!\\n”);
} }
运行结果为: 70-80 60-70 17.
#include
for(;y>0;y- -)
if(y%3==0)
{ printf(%d”,- -y); continue; }
}
运行结果为: 852
18.
#include
{ int i,sum=0; i=1;
do{ sum=sum+i; i++; }while(i<=10); printf(“%d”,sum); }
运行结果为: 55 19.
#include
int x1=1,x2=2; printf(\
for(i=1;i<=N;i++)
{ printf(\if(i%2==0)
printf(\x1=x1+x2; x2=x2+x1; } }
运行结果为: 1 2 3 5 8 13 21 34 20
#include
{ int x, y;
for(x=30, y=0; x>=10, y<10; x--, y++) x/=2, y+=2;
printf(“x=%d,y=%d\\n”,x,y); }
运行结果为: x=0,y=12