PAT乙级部分
1001 害死人不偿命的(3n+1)猜想 (15 分)
#include<stdio.h>
int main()
{
int n;
int i=0;
scanf("%d",&n);
while(n!=1)
{
if(n%2==0)
{
n=n/2;
i++;
}
else
{
n=(3*n+1)/2;
i++;
}
}
printf("%d",i);
return 0;
}
1006 换个格式输出整数 (15 分)
#include<stdio.h>
int main()
{
int n,one,ten,hunderd;
scanf("%d",&n);
one=n%10;
ten=((n-one)%100)/10;
hunderd=(n-one-ten*10)/100;
for(int i=0;i<hunderd;i++)
{
printf("B");
}
for(int i=0;i<ten;i++)
{
printf("S");
}
for(int i=1;i<=one;i++)
{
printf("%d",i);
}
return 0;
}
1011 A+B 和 C (15 分)
#include<stdio.h>
int main()
{
int num;
long a,b,c;
scanf("%d",&num);
for(int i=1;i<=num;i++)
{
scanf("%ld %ld %ld",&a,&b,&c);
if(a+b>c)
{
printf("Case #%d: true\n",i);
}
else
{
printf("Case #%d: false\n",i);
}
}
return 0;
}
1016 部分A+B (15 分)
参考https://blog.csdn.net/qq_45800977/article/details/106318498
#include<stdio.h>
int main()
{
long a,b,da,db;
long pa=0;
long pb=0;
int i;
scanf("%ld %ld %ld %ld",&a,&da,&b,&db);
i=1;
if(da==0)
{
pa=0;
}
else if(a<10)
{
pa=a;
}
else
{
while(a>=i*da)
{
if((a-da*i)%(i*10)<i)
{
pa=pa*10+da;
}
i=i*10;
}
}
i=1;
if(db==0)
{
pb=0;
}
else if(b<10)
{
pb=b;
}
else
{
while(b>=i*db)
{
if((b-db*i)%(i*10)<i)
{
pb=pb*10+db;
}
i=i*10;
}
}
printf("%ld",pa+pb);
return 0;
}
1021 个位数统计 (15 分)
#include<stdio.h>
int main()
{
int ones[10]={0};
char num[1000];
int i=0;
int n;
scanf("%s",num);
while(num[i]!='\0')
{
n=num[i]-'0';
ones[n]=ones[n]+1;
i++;
}
for(int j=0;j<10;j++)
{
if(ones[j]!=0)
{
printf("%d:%d\n",j,ones[j]);
}
}
return 0;
}
1026 程序运行时间 (15 分)
#include<stdio.h>
int main()
{
const int CLK_TCK=100;
long start,end,times,hours,minutes,seconds;
scanf("%ld %ld",&start,&end);
times=(end-start)/CLK_TCK;
if ((end - start) % CLK_TCK >= 50)
{
times=times+1;
}
seconds=times%60;
minutes=((times-seconds)/60)%60;
hours=(times-60*minutes-seconds)/3600;
printf("%02ld:%02ld:%02ld",hours,minutes,seconds);
return 0;
}
1031 查验身份证 (15 分)
#include<stdio.h>
int main()
{
char idcard[18];
int num;
int check=0;
int weight[17]={7,9,10,5,8,4,2,1,6,3,7,9,10,5,8,4,2};
char check_bit[11]={'1','0','X','9','8','7','6','5','4','3','2'};
scanf("%d",&num);
int k=0;
for(int i=0;i<num;i++)
{
scanf("%s",idcard);
for(int j=0;j<17;j++)
{
check=(idcard[j]-'0')*weight[j]+check;
}
if(idcard[17]!=check_bit[check%11])
{
printf("%s\n",idcard);
k++;
}
check=0;
}
if(k==0)
{
printf("All passed");
}
return 0;
}
1036 跟奥巴马一起编程 (15 分)
#include<stdio.h>
int main()
{
int row,line;
char sigh;
scanf("%d %c",&row,&sigh);
if(row%2==0)
{
line=row/2;
}
else
{
line=row/2+1;
}
for(int i=0;i<line;i++)
{
if(i==0||i==line-1)
{
for(int j=0;j<row;j++)
{
printf("%c",sigh);
}
}
else
{
for(int j=0;j<row;j++)
{
if(j==0||j==row-1)
{
printf("%c",sigh);
}
else
{
printf(" ");
}
}
}
printf("\n");
}
return 0;
}
1041 考试座位号 (15 分)
#include<stdio.h>
int main()
{
typedef struct{
long long id;
int test_chair;
int real_chair;
} students;
students student[1000];
int num;
int search;
int search_chair;
int n=0;
scanf("%d",&num);
for(int i=0;i<num;i++)
{
scanf("%lld %d %d ",&student[i].id,&student[i].test_chair,&student[i].real_chair);
}
scanf("%d",&search);
for(int i=0;i<search;i++)
{
scanf("%d",&search_chair);
for(int j=0;j<num;j++)
{
if(student[j].test_chair==search_chair)
{
printf("%lld %d\n",student[j].id,student[j].real_chair);
break;
}
}
}
return 0;
}
1046 划拳 (15 分)
#include<stdio.h>
int main()
{
int round,people1_say,people1_do,people2_say,people2_do,number;
int people1=0;
int people2=0;
scanf("%d",&round);
while(round!=0)
{ round--;
scanf("%d %d %d %d",&people1_say,&people1_do,&people2_say,&people2_do);
number=people1_say+people2_say;
if(number==people1_do&&number==people2_do)
{
continue;
}
if(number==people1_do)
{
people2++;
}
if(number==people2_do)
{
people1++;
}
}
printf("%d %d",people1,people2);
return 0;
}
1056 组合数的和 (15 分)
#include<stdio.h>
int main()
{
int numbers[10];
int n;
int total=0;
scanf("%d",&n);
for(int i=0;i<n;i++)
{
scanf("%d",&numbers[i]);
}
for(int i=0;i<n;i++)
{
total=total+numbers[i]*10*(n-1)+numbers[i]*(n-1);
}
printf("%d",total);
return 0;
}
1051 复数乘法 (15 分)
#include<math.h>
#include<stdio.h>
int main()
{
double R1,P1,R2,P2;
double realpart1,imapart1,realpart2,imapart2,realpart,imapart;
scanf("%lf %lf %lf %lf",&R1,&P1,&R2,&P2);
realpart1=R1*cos(P1);
imapart1=R1*sin(P1);
realpart2=R2*cos(P2);
imapart2=R2*sin(P2);
realpart=realpart1*realpart2-imapart1*imapart2;
imapart=imapart2*realpart1+imapart1*realpart2;
if (realpart + 0.005 >= 0 && realpart < 0)
{
printf("0.00");
}
else
{
printf("%.2f", realpart);
}
if(imapart >= 0)
{
printf("+%.2fi", imapart);
}
else if (imapart + 0.005 >= 0 && imapart < 0)
{
printf("+0.00i");
}
else
{
printf("%.2fi", imapart);
}
return 0;
}
