task1
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#include<windows.h>
#define N 80
void print_text(int line,int col,char text[]);
void print_spaces(int n);
void print_black_line(int n);
int main(){
int line,col,i;
char text[N]="hi,April~";
srand(time(0));
for(i=1;i<=10;++i){
line=rand()%25;
col=rand()%80;
print_text(line,col,text);
Sleep(1000);
}
return 0;
}
void print_spaces(int n){
int i;
for(i=1;i<=n;++i)
printf(" ");
}
void print_blank_lines(int n) {
int i;
for(i = 1; i <= n; ++i)
printf("\n");
}
void print_text(int line, int col, char text[]) {
print_blank_lines(line-1);
print_spaces(col-1);
printf("%s", text);
}
使“hi，April”随机出现在屏幕上，每个“hi，April”间间隔随机间隔line-1行及col-1空格
task2-2
#include<stdio.h>
long long fac(int n);
int main(){
int i,n;
printf("Enter n: ");
scanf("%d",&n);
for(i=1;i<=n;++i)
printf("%d!=%lld\n",i,fac(i));
return 0;
}
long long fac(int n){
static long long p=1;
p=p*n;
return p;
}
task2-2
#include <stdio.h>
int func(int,int);
int main(){
int k=4,m=1,p1,p2;
p1=func(k,m);
p2=func(k,m);
printf("%d,%d\n",p1,p2);
return 0;
}
int func(int a,int b){
static int m=0,i=2;
i+=m+1;
m=i+a+b;
return m;
}
static使得执行main函数时变量不再被初始化，变量数值得以保留
task3
#include <stdio.h>
long long func(int n);
int main(){
int n;
long long f;
printf("请输入一个0~32之间的整数\n");
while(scanf("%d",&n)!=EOF){
f=func(n);
printf("n=%d,f=%lld\n",n,f);
}
return 0;
}
long long func(int n){
int f;
for(int i=1;i<=n;i++){
f=2*f+1;
}
return f;
}
task4
#include<stdio.h>
int func(int n,int m);
int main(){
int n,m;
while(scanf("%d%d",&n,&m)!=EOF)
printf("n=%d,m=%d,ans=%d\n",n,m,func(n,m));
return 0;
}
int func(int n,int m){
if (n==m || m==0){return 1;}
else if(n<m){return 0;}
else
return func(n-1,m)+func(n-1,m-1);
}
task5
#include<stdio.h>
double mypow(int x,int y);
int main(){
int x,y;
double ans;
while(scanf("%d%d",&x,&y)!=EOF){
ans=mypow(x,y);
printf("%d的%d次方：%g\n\n",x,y,ans);
}
return 0;
}
double mypow(int x,int y){
double ans=1;
if(y>=0){
for(int i=1;i<=y;i++){
ans=ans*x;
}
}
if(y<0){
for(int i=1;i<=-y;i++){
ans=ans/x;
}
}
return ans;
}
task6
#include<stdio.h>
void move(char getone,char putone){
printf("%c--->%c\n",getone,putone);
}
void hanoi(int n,char one,char two,char three){
if(n==1) move(one,three);
else{
hanoi(n-1,one,three,two);
move(one,three);
hanoi(n-1,two,one,three);
}
}
int main(){
int m,n=1,sum;
while(scanf("%d",&m)!=EOF){
hanoi(m,'A','B','C');
for(int i=1;i<=m;i++){
n=2*n;
sum=n-1;
if(i==m)n=1;
}
printf("一共移动了%d次\n",sum);
}return 0;
task7
#include<stdio.h>
#include<stdlib.h>
#include<math.h>
int is_prime(int n);
int main()
{
int n,p,q,a,b;
for(n=4;n<=20;n+=2)
{p=1;
do{
p++;
q=n-p;
a=is_prime(p);
b=is_prime(q);
}
while(a*b==0);
printf("%d=%d+%d\n",n,p,q);
}
return 0;
}
int is_prime(int n){
int k;
for(k=2;k<=sqrt(n);k++)
if(n%k==0)
{
return 0;
}
return 1;
}
task8
#include <stdio.h>
#include <math.h>
long func(long s);
int main() {
long s, t;
printf("Enter a number: ");
while (scanf("%ld", &s) != EOF) {
t = func(s);
printf("new number is: %ld\n\n", t);
printf("Enter a number: ");
}
return 0;
}
long func(long s){
long g=0,l=0;int t;
while(s!=0){
t=s %10;
s=s/10;
if(t%2!=0){
l=l*10+t;
}
}
while(l!=0){
t=l%10;
l=l/10;
g=g*10+t;
}
return g;
}
标签：main,int,long,实验,func,printf,include From： https://www.cnblogs.com/ghytf/p/17288043.html