目录
一，前言
自己每天练习十道C语言编程入门题，我提供答案不一定是最优，仅供参考，本片提供前四十二道编程的答案，拒绝做伸手党，自己找出错误才能提升自我，题目具体内容参考牛客网，后续会继续更新。
二，题目及答案
1，实践出真知
#include<stdio.h>
int main()
{
printf("Practice makes perfect!");
return 0;
}2，我是大V
#include<stdio.h>
int main()
{
printf("v v\n");
printf(" v v\n");
printf(" v");
return 0;
}3，有容乃大
#include<stdio.h>
int main()
{
int a,b,c,d;
a =sizeof(short);
b =sizeof(int );
c =sizeof(long );
d =sizeof( long long);
printf("The size of short is %d bytes.\n" , a );
printf("The size of int is %d bytes.\n", b );
printf("The size of long is %d bytes.\n", c );
printf("The size of long long is %d bytes.", d );
return 0;
}4，小飞机
#include<stdio.h>
int main()
{
printf(" ** \n");
printf(" ** \n");
printf("************\n");
printf("************\n");
printf(" * * \n");
printf(" * * \n");
return 0;
} 5，缩短二进制
#include<stdio.h>
int main()
{
printf("0%o 0X%X\n",1234,1234);
return 0;
}6，十六进制转十进制
#include<stdio.h>
int main()
{
printf("%15d\n",0XABCDEF);
return 0;
}7，printf返回值
#include <stdio.h>
int main()
{
printf("\n%d\n",printf("Hello world!"));
}8，成绩输入输出
#include<stdio.h>
int main()
{
int a,b,c;
scanf("%d %d %d",&a,&b,&c);
printf("score1=%d,score2=%d,score3=%d",a,b,c);
return 0;
}9，学生基本信息输入输出
#include<stdio.h>
int main()
{
int a = 0;
float b = 0;
float c = 0;
float d = 0;
scanf("%d; %f, %f, %f\n", &a, &b, &c, &d);
printf("The each subject score of No. %d is %.2f, %.2f, %.2f.\n", a, b, c, d);
return 0;
}10，字符金字塔
#include<stdio.h>
int main()
{
char ch = getchar();
for(int i = 1; i <= 5; i++)
{
for(int j = 1; j <= 5 - i; j++)
putchar(' ');
for(int j = 1; j <= i; j++)
{
putchar(ch);
if(j != i)
putchar(' ');
}
putchar('\n');
}
}
11，ASCII码
#include<stdio.h>
int main()
{
char a[] = {73,32,99,97,110,32,100,111,32,105,116,33};
printf("%s",a);
return 0;
}12，出生日期的输入输出
#include<stdio.h>
int main()
{
int year = 0,month =0,date = 0;
scanf("%4d%2d%2d", &year,&month,&date);
printf("year=%d\n",year);
printf("month=%02d\n",month);
printf("date=%02d\n", date);
return 0;
}13，按照格式输入并交换输出
#include<stdio.h>
int main()
{
int a,b,temp;
scanf("a=%d,b=%d",&a,&b);
temp = a;
a = b;
b = temp;
printf("a=%d,b=%d\n",a,b);
return 0;
}
14，字符转ASCII码
#include<stdio.h>
int main()
{
char a = 0;
scanf("%c",&a);
printf("%d",a);
return 0;
}15，计算表达式的值
#include <stdio.h>
int main()
{
int a = 40;
int c = 212;
int q=(-8+22) * a-10 +c /2;
printf("%d",q);
return 0;
}16，计算带余除法
#include<stdio.h>
int main()
{
int a,b,c,d;
scanf("%d %d",&a,&b);
c = a / b;
d = a % b;
printf("%d %d", c,d);
return 0;
}17，反向输出一个四位数
#include<stdio.h>
int main()
{
char a,b,c,d;
scanf("%c%c%c%c",&a,&b,&c,&d);
printf("%c%c%c%c",d,c,b,a);
return 0;
}18，kiki算数
#include<stdio.h>
int main()
{
int a,b,c;
scanf("%d %d", &a, &b);
c = (a + b) % 100;
printf("%d",c);
return 0;
}19，浮点数的个位数字
#include<stdio.h>
int main()
{
int a, c;
float b;
scanf("%f",&b);
a = (int)b;
c = a % 10;
printf("%d",c);
return 0;
}20，你能活多少秒
#include<stdio.h>
int main()
{
long age, b;
scanf("%ld", &age);
b = age * 31560000;
printf("%ld", b);
return 0;
}21，时间转化
#include<stdio.h>
int main()
{
int a;
int b,c,d;
scanf("%d", &a);
b = a / 3600;
c = (a % 3600) / 60;
d = (a % 3600) % 60;
printf("%d %d %d",b, c, d);
return 0;
}22，总成绩和平均数的计算
#include<stdio.h>
int main()
{
float a, b, c;
float sum = 0.00;
float avage = 0.00;
scanf("%f %f %f", &a, &b, &c);
sum = a + b + c;
avage = sum / 3.00;
printf("%0.2f %0.2f", sum, avage);
return 0;
}23，计算体重指数
#include<stdio.h>
int main()
{
int w,h;
scanf("%d %d", &w,&h);
float w2,h2,BMI;
w2 = w;
h2 = h / 100.0;
BMI = 1.0 * w2 / (h2 * h2);
printf("%.2f", BMI);
return 0;
}24，计算三角形的周长和面积
#include<stdio.h>
#include<math.h>
int main()
{
int a,b,c;
float cir = 0.00;
float area = 0.00;
float p = 0;
scanf("%d %d %d", &a,&b,&c);
cir = a + b + c;
p = cir / 2.0f;
area = sqrt(p*(p-a)*(p-b)*(p-c));
printf("circumference=%0.2f area=%0.2f", cir, area);
return 0;
}25，计算球体的体积
#include<stdio.h>
int main()
{
double r = 0.0, V;
scanf("%lf",&r);
V = 4.0 / 3.0 * 3.1415926 * r * r *r;
printf("%0.3lf", V);
return 0;
}26，大小写的转换
#include<stdio.h>
int main()
{
char ch = 0;
while((ch = getchar()) != EOF)
{
if(ch >= 'A' && ch <= 'Z')
{
ch += 32;
}
putchar(ch);
}
return 0;
}27，2 的n次方的计算
#include<stdio.h>
int main()
{
int a;
while(scanf("%d", &a) != EOF)
{
printf("%d\n",1 << a);
}
return 0;
}28，kiki和酸奶
#include<stdio.h>
int main()
{
int a=0, b=0, c=0, d;
scanf("%d %d %d", &a,&b,&c);
if(c % b == 0)
{
d = a - (c / b);
}
if(c % b !=0)
{
d = a - (c / b) - 1;
}
printf("%d", d);
return 0;
}29，发布信息
#include <stdio.h>
int main()
{
printf("I lost my cellphone!");
return 0;
}30，输入学生信息
#include<stdio.h>
int main()
{
printf("Name Age Gender\n");
printf("---------------------\n");
printf("Jack 18 man");
return 0;
}31，计算平均成绩
#include<stdio.h>
int main()
{
float a,b,c,d,e,avage;
scanf("%f %f %f %f %f", &a, &b, &c, &d, &e);
avage = (a + b + c + d + e) / 5.0;
printf("%0.1f", avage);
return 0;
}32，进制A+B
#include<stdio.h>
int main()
{
int a,b;
scanf("%x %o",&a, &b);
printf("%d", a + b);
return 0;
}33，判断字母
#include<stdio.h>
int main()
{
char a = 0;
while(scanf("%c", &a) != EOF)
{
getchar();
if((a >= 'a' && a <= 'z') || (a >='A' && a <= 'Z'))
printf("YES\n");
else
printf("NO\n");
}
return 0;
}34，健康评估
#include<stdio.h>
int main()
{
double weight,heigh,BMI;
scanf("%lf %lf", &weight, &heigh);
BMI = weight / (heigh * heigh);
if(BMI >= 18.5 && BMI <= 23.9)
{
printf("Normal");
}
else
{
printf("Abnormal");
}
return 0;
}35，网购
#include<stdio.h>
int main()
{
float price,sum;
int month,day,flag;
scanf("%f%d%d%d",&price,&month,&day,&flag);
if(month==11&&day==11)
{
sum=0.7*price;
if(flag==1)
{
if(sum>=50)
sum-=50;
else
sum=0;
}
}
else if(month==12&&day==12)
{
sum=0.8*price;
if(flag==1)
{
if(sum>=50)
sum-=50;
else
sum=0;
}
}
else
{
sum=price;
}
printf("%.2f",sum);
return 0;
}
36，变种水仙花
#include<stdio.h>
int main()
{
int a = 0;
for(a = 10000; a <= 99999;a++)
{
int sum = 0;
sum =(a / 10000)*(a % 10000) + (a /1000)*(a %1000) + (a / 100)*(a % 100) + (a / 10)*(a % 10);
if(sum==a)
printf("%d ", a);
}
return 0;
}37，争夺前五名
#include<stdio.h>
int main()
{
int n = 0, i = 0;
scanf("%d", &n);
int a[n];
for (i = 0; i < n; i++)
{
scanf("%d", &a[i]);
}
int temp = 0, j = 0;
for (i = 0; i < n - 1; i++)
{
for (j = 0; j < n - 1 -i; j++)
{
if (a[j] < a[j + 1])
{
temp = a[j];
a[j] = a[j + 1];
a[j + 1] = temp;
}
}
}
printf("%d %d %d %d %d ", a[0], a[1], a[2], a[3], a[4]);
return 0;
}38，竞选社长
#include<stdio.h>
int main()
{
int a_count = 0, b_count = 0;
char ch = 0;
while(scanf("%c", &ch) != EOF)
{
if(ch == '0')
break;
if(ch == 'A')
{
a_count++;
}
if(ch == 'B')
{
b_count++;
}
}
if(a_count == b_count)
{
printf("E\n");
}
else if(a_count > b_count)
{
printf("A\n");
}
else
{
printf("B");
}
return 0;
}39，你是天才吗
#include<stdio.h>
int main()
{
int a;
scanf("%d", &a);
if(a >= 140)
{
printf("Genius");
}
return 0;
}40，完美成绩
#include<stdio.h>
int main()
{
int a = 0;
scanf("%d", &a);
if(a >= 90 && a <= 100)
{
printf("Perfect\n");
}
return 0;
}41,及格分数
#include<stdio.h>
int main()
{
int a;
while(scanf("%d", &a) != EOF)
{
if (a >= 60)
{
printf("Pass\n");
}
else
{
printf("Fail\n");
}
}
return 0;
}42，判断整数奇偶数
#include<stdio.h>
int main()
{
int a;
while(scanf("%d", &a) != EOF)
{
if(a % 2 == 0)
{
printf("Even\n");
}
else
{
printf("Odd\n");
}
}
return 0;
}三，总结
学习是一个漫长且枯燥的过程，不积跬步，无以至千里。
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