160809230张钊

#include<stdio.h>
int main()
{
    int i,sum=0;
    sum=0;
    for(i=1;i<=100;i++)
    sum+=i;
    printf("sum=%d\n",sum);
    return 0;
}

#include<stdio.h>
int main(){
    int n,i,jiec=1;
    printf("请输入一个整数n:");
    scanf("%d",&n);
    i=n;
    while(i>1){
        jiec=jiec*i;
        i--;
    }
    printf("%d!=%d\n",n,jiec);
    
    return 0;
}

#include<stdio.h>
int main()
{
    int k,sum=0;
    for(k=1;k<=100;k++)
        sum+=k;
    printf("sum=%d\n",sum);
    
    for(k=1;k<=50;k++)
        sum=sum+k*k;
    printf("sum=%d\n",sum);
    
    for(k=1;k<=10;k++)
        sum=sum+1.0/k;
    printf("sum=%d\n",sum);

    return 0;
}

#include<stdio.h>
int main()
{
    char c;
    int zm=0,sz=0,kg=0,qt=0;
    while((c=getchar())!='\n'){
        if(c>='a'&&c<='z'||c>='A'&&c<='Z')
            zm++;
        else if(c==' ')
            kg++;
        else if(c>='0'&&c<='9')
            sz++;
        else
        qt++;
    }
    printf("字母个数；%d\n",zm);
    printf("空格个数；%d\n",kg);
    printf("数字个数；%d\n",sz);
    printf("其他个数；%d\n",qt);
    return 0;
}

#include<stdio.h>
int main()
{
    int m,n,t,i,gys=1,gbs;
    printf("请输入两个整数；");
    scanf("%d%d",&m,&n);
    if(n>m){
        t=m;
        m=n;
        n=t;    
    }
    for(i=n;i>=1;i--)
        if(m%i==0&&n%i==0)
            break;
        printf("m=%d，n=%d",m,n);
    if(i!=0){
        gys=i;
        printf("，最大公约数为；%d\n",gys);
    }
        gbs=m*n/gys;
        printf("最大公倍数为；%d\n",gbs);
    return 0;
}