第三次作业P141

6.4

#include <stdio.h>int main(){    int i,n;    long m=1,p=1;    printf("input n:");    scanf("%d",&n);    for(i=1;i<=n;i++);    {        m=i*i;        p=i*i*i;    printf("m=%1d,p=%1d\n",m,p);    }}

6.5

#include <stdio.h>int main(){    float C,F;    for(C=0;C<300;C=C+10)    {        F=9/5*C+32;        printf("%f=%f\n",F);    }}

6.7

#include <stdio.h>#include<math.h>int main(){    int n=0;    float x=100.0,a;    printf("input a:");    scanf("%f",&a);    do    {    x=x*(1+a);    n++;    }while(x<=200.0);    printf("n=%d\n",n);}

6.8

#include <stdio.h>#include<math.h>int main(){    int n=1,count=1;    float sum=0,term=1.0,sign=1;    do    {    term=sign*1.0/n;    sum=sum+term;    sign=sign*(-1);    n=n+2;    count++;    }while(fabs(term)>=1e-4);    sum=4*sum;    printf("sum=%f,count=%d\n",sum,count);}

6.10

#include <stdio.h>#include<math.h>int main(){    int m;    for(m=100;m<=999;m++)    {        if(m==pow(m/100,3)+pow(m/10%10,3)+pow(m%10,3))        printf("m=%d\n",m);    }}

6.11

#include <stdio.h>int main(){    int i=0,n;    long sum=0,term=1;    printf("input n:");    scanf("%d",&n);    do    {        i++;        term=term*i;        sum=sum+term;    }while(sum<n);    printf("%d\n",i-1);}