文档介绍：1
main()
{int a,b,num1,num2,temp;
scanf("%d,%d",&num1,&num2);
if(num1<num2){temp=num1;num1=num2;num2=temp;}
a=num1;b=num2;
while(b!=0)
{temp=a%b;
a=b;
b=temp;}
printf("%d\n",a);
printf("%d\n",num1*num2/a);
}
2
#include""
main()
{char c;
int letters=0,space=0,digit=0,other=0;
while((c=getchar())!='\n')
{if(c>='a'&&c<='z'||c>='A'&&c<='Z') letters++;
else if(c==' ')space++;
else if(c>='0'&&c<='9')digit++;
else other++;
}
printf("letters=%d\nspace=%d\ndigit=%d\nother=%d\n",letters,space,digit,other);
}
3
main()
{int a,n,count=1,sn=0,tn=0;
scanf("%d,%d",&a,&n);
while(count<=n)
{tn+=a;
sn+=tn;
a*=10;
++count;
}
printf("a+aa+aaa+...=%d\n",sn);
}
4
main()
{float n,s=0,t=1;
for(n=1;n<=20;n++)
{t*=n;
s+=t;
}
printf("s=%e\n",s);
}
5
main()
{int N1=100,N2=50,N3=10;
float k;
float s1=0,s2=0,s3=0;
for(k=1;k<=N1;k++)s1+=k;
for(k=1;k<=N2;k++)s2+=k*k;
for(k=1;k<=N3;k++)s3+=1/k;
printf("s=%\n",s1+s2+s3);
}
6
main()
{int i,j,k,n;
for(n=100;n<1000;n++)
{i=n/100;
j=n/10-i*10;
k=n%10;
if(i*100+j*10+k==i*i*i+j*j*j+k*k*k)
printf("n=%d\n",n);
}
}
8
main()
{int n,t,number=20;
float a=2;b=1;s=0;
for(n=1;n<=number;n++)
{s=s+a/b;
t=a,a=a+b,b=t;
}
printf("s=%\n",s);
}
9
main()
{float sn=,hn=sn/2;
int n;
for(n=2;n<=10;n++)
{sn=sn+2*hn;
hn=hn/2;
}
printf("sn=%f\n",sn);
printf("hn=%f\n",hn);
}
10
main()
{int day,x1,x2;
day=9;