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C with classes

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This commit is contained in:
e2hang
2025-12-31 00:39:23 +08:00
commit a047893756
198 changed files with 11173 additions and 0 deletions
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29
C/BasicSyntax/Cstring_test.cpp Normal file
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#include <string.h>
#include <stdio.h>
int main(){
char a[21][11];
char sum[220]="";
int n;
scanf("%d",&n);
for(int i=0;i<n;i++){
scanf("%s",&a[i]);
}
int js=1;
char tmp[11]="";
while(js!=0){
js=0;
for(int i=0;i<n-1;i++){
if(strcmp(a[i],a[i+1])<0){
strcpy(tmp,a[i+1]);
strcpy(a[i+1],a[i]);
strcpy(a[i],tmp);
js++;
}
}
}
for(int i=0;i<n;i++){
strcat(sum,a[i]);
}
printf("%s",sum);
return 0;
}

27
C/BasicSyntax/P1914 小书童——凯撒密码.cpp Normal file
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#include <stdio.h>
#include <string.h>
void pwd(char ch[52]){
for(int i=0;i<strlen(ch);i++){
if(ch[i]!='z'){
ch[i]++;
}
if(ch[i]=='z')
ch[i]='a';
}
}
int main(){
int n;
scanf("%d",&n);
char a[52];
scanf("%s",a);
for(int i=0;i<strlen(a);i++){
if(a[i]+n>=123)
a[i]+=n-26;
else{
a[i]+=n;
}
}
printf("%s",a);
return 0;
}

35
C/BasicSyntax/Pointer/difference_xp4_qxpq4.cpp Normal file
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/*#include <stdio.h>
int main() {
char *p[4] = {"Hello", "World", "C", "Language"};
printf("%s\n", p[1]); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>World
printf("%c\n", *p[1]); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>W <20><>p[1]ָ<><D6B8>"World"<22><>*p[1]<5D><><EFBFBD><EFBFBD>'W'<27><>
printf("%c\n", *(p[1] + 1)); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>o <20><>p[1] + 1 <20><> 'o' <20>ĵ<EFBFBD>ַ<EFBFBD><D6B7>
return 0;
}
*/
#include <stdio.h>
int main() {
int arr[2][4] = {{1, 2, 3, 4}, {5, 6, 7, 8}};
int (*p)[4] = arr;
printf("%d\n", (*p)[2]); // <20><><EFBFBD><EFBFBD> 3<><33><EFBFBD><EFBFBD>Ϊ (*p) <20><><EFBFBD><EFBFBD> arr[0]<5D><><EFBFBD><EFBFBD> {1, 2, 3, 4}<7D><>Ȼ<EFBFBD><C8BB> [2] <20><>ʾ<EFBFBD><CABE><EFBFBD>ʵ<EFBFBD> 3 <20><>Ԫ<EFBFBD>ء<EFBFBD>
//1<><31>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ʾ<EFBFBD><CABE>ַ 2<><32><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>ֱ<EFBFBD>ӿ<EFBFBD><D3BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//(*p)<29><>ţ<EFBFBD>ƣ<EFBFBD>ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>Դ<EFBFBD><D4B4>棬ʲô<CAB2><C3B4><EFBFBD><EFBFBD><EFBFBD>飩<EFBFBD><E9A3A9><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>飩<EFBFBD><E9A3A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԡ<EFBFBD>
//(*p)[i]<5D><>p <20><>һ<EFBFBD><D2BB>ָ<EFBFBD><D6B8> <20><><EFBFBD>飨<EFBFBD><E9A3A8> int[4]<5D><><EFBFBD><EFBFBD>ָ<EFBFBD>롣<EFBFBD><EBA1A3><EFBFBD>Ƚ<EFBFBD><C8BD><EFBFBD><EFBFBD><EFBFBD> p <20>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>鱾<EFBFBD><E9B1BE><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> [i] <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>Ԫ<EFBFBD>ء<EFBFBD>
//*p[4]:p <20><>һ<EFBFBD><D2BB>ָ<EFBFBD><D6B8><EFBFBD>飬<EFBFBD><E9A3AC>5<EFBFBD><35>ָ<EFBFBD>룬*p[i]<5D>ǽ<EFBFBD><C7BD><EFBFBD>p[i]<5D><>ԭֵ
//*(p + i)<29><>p <20><>һ<EFBFBD><D2BB>ָ<EFBFBD><D6B8>ij<EFBFBD><C4B3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ԫ<EFBFBD>ص<EFBFBD>ָ<EFBFBD>롣ͨ<EBA1A3><CDA8>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> p + i <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƫ<EFBFBD><C6AB> i <20><>λ<EFBFBD>õ<EFBFBD>Ԫ<EFBFBD>ء<EFBFBD>
//ָ<><D6B8><EFBFBD>е<EFBFBD>p[i]<5D><>ȫ<EFBFBD><C8AB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ*(p+i)
char arr[2][4] = {"abc", "def"}; // 2 <20><> 4 <20>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>
char (*p)[4] = arr; // p ָ<><D6B8> arr
printf("%s\n", p[0]); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>abc
printf("%c\n", (*p)[1]); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>b
p++; // p <20>ƶ<EFBFBD><C6B6><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB> char[4] <20><><EFBFBD><EFBFBD>
printf("%s\n", p[0]); // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>def
return 0;
}

18
C/BasicSyntax/Pointer/pointer_book_li8.27.cpp Normal file
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#include <stdio.h>
#include <string.h>
bool flag=false;
int main(){
int n;
scanf("%d",&n);
char dic[n][1000];
char (* p)[1000] = dic;
for(int i=0;i<n;i++){
gets(dic[i]);
}
while(flag==false){
for(int i=0;i<n;i++){
if((* p))
}
}
return 0;
}

40
C/BasicSyntax/Pointer/pointer_function_str1.cpp Normal file
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#include <stdio.h>
#include <stdlib.h>
char str[201];
/*char * add(char *str1,char *str2){
int i=0;
while(*str1!='\0'){
str[i]=*str1;
i++;str1++;
}
while(*str2!='\0'){
str[i]=*str2;
i++;str2++;
}
str[i]='\0';
//printf("%s\n",str);
//return str;
}*/
void add(char *str1,char *str2){
int i=0;
while(*str1!='\0'){
str[i]=*str1;
i++;str1++;
}
while(*str2!='\0'){
str[i]=*str2;
i++;str2++;
}
str[i]='\0';
//printf("%s\n",str);
//return str;
}
int main(){
char a[100],b[100];
//char * p= (char *)malloc(201*sizeof(char));
scanf("%s%s",a,b);
add(a,b);
printf("%s",str);
//free(p);
return 0;
}

19
C/BasicSyntax/Pointer/pointer_test1.cpp Normal file
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#include <stdio.h>
void swap(int * a, int * b){
int temp;
temp = * a;
* a = * b;
* b = temp;
}
int main()
{
int a,b;
scanf("%d%d",&a,&b);
int *t1,*t2;
t1=&a;
t2=&b;
swap(t1,t2);
printf("%d %d\n",t1,t2);
printf("%d %d\n",*t1,*t2);
return 0;
}

47
C/BasicSyntax/Pointer/pointer_test_array.cpp Normal file
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#include <stdio.h>
//<2F><><EFBFBD>⣺p<E2A3BA><70>&a<><61><EFBFBD><EFBFBD>һ<EFBFBD>£<EFBFBD><C2A3><EFBFBD>ֵֻ<D6B5><D6BB>ͨ<EFBFBD><CDA8>p=&a<><61>*p<><70>ʾ<EFBFBD><CABE><EFBFBD><EFBFBD>p<EFBFBD><70>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD>Ϊ<EFBFBD>ڴ<EFBFBD><DAB4>е<EFBFBD>ֵ
//const
//#define x 0
int x = 0;
/*void change1(int *arr){
*(arr+1) = -1;
} */
void change(int arr[5]){
arr[1] = -1;
}//Ч<><D0A7>һ<EFBFBD><D2BB>
int main()
{
//ֻ<><D6BB>ͨ<EFBFBD><CDA8><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>ָ<EFBFBD>븳ֵ<EBB8B3><D6B5><EFBFBD><EFBFBD>ָ<EFBFBD>븳ֵ<EBB8B3><D6B5><EFBFBD>ǵ<EFBFBD>ַ<EFBFBD><D6B7>
//<2F><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ
int * p;
//p = &x; //<2F><>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD><CAB9>malloc<6F><63>ָ<EFBFBD><D6B8><EFBFBD>漴<EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>ַ
//int a[5];//<2F><><EFBFBD>Բ<EFBFBD><D4B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
/*
for(int i=0;i<5;i++){
scanf("%d",&a[i]);
}*/
for(int i = 0;i < 5 ; i++) {
p = &x;
p++;
}
/*for(p = a; p < (a + 5) ; p++){
scanf("%d",p);
}*/
p = &x;
for(int i = 0 ; i < 5 ; i++){
scanf("%d",p++);
}
//p = a;
//* (p+2) = 0;
//change(a);
p = &x;
for(int i=4 ; i >= 0 ; i--){
printf("%d ",*(p+i));
}
/*printf("\n");
for(int i=0;i<5;i++){
printf("%d ",*(p+i));
}*/
// printf("%d",* p);
return 0;
}

42
C/BasicSyntax/Pointer/pointer_test_pointer_arrary.cpp Normal file
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#include <stdio.h>
//<2F><><EFBFBD><EFBFBD>һ
/*int average(int *arr,int line,int row){
int sum=0;
for(int i=0;i<line*row;i++){
sum+=*arr;
*arr++;
}
return sum;
} */
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
int average(int (*arr)[3],int line,int row){
int sum=0;
for(int i=0;i<line;i++){
for(int j=0;j<row;j++){
sum+=*(*(arr+i)+j);
}
}
return sum;
}
int main(){
int * p[3];
int a[3][4];
for(int i=0;i<3;i++){
for(int j=0;j<4;j++){
scanf("%d",&a[i][j]);
}
}
for(int i=0;i<3;i++){
p[i] = a[i];
}
//<2F><>2ά<32><CEAC><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD>a[i]<5D><>i<EFBFBD>е<EFBFBD>ָ<EFBFBD>룬&a[i]<5D><>i<EFBFBD>е<EFBFBD>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>룬<EFBFBD><EBA3AC>ͷ<EFBFBD><CDB7>
for(int i=0;i<3;i++){
for(int j=0;j<4;j++){
printf("%d ",*(* (p+i)+j));
}
}
//printf("%d",average(&a[0][0],3,4));
printf("%d",average(&a,3,4));
return 0;
}

28
C/BasicSyntax/Pointer/pointer_test_str1.cpp Normal file
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#include <stdio.h>
//strcmp //<2F><>ϼ<EFBFBD><CFBC>
int main(){
char str1[100],str2[100];
char a[201];
//char *sum;
scanf("%s %s",str1,str2);
int i=0;
char *p1,*p2;
p1=str1;
p2=str2;
while(*p1!='\0'){
a[i]=*p1;
i++;
p1++;
}
a[i]='+';
i++;
while(*p2!='\0'){
a[i]=*p2;
i++;
p2++;
}
a[i]='\0';
*(a+1)='s';
printf("%s",a);
return 0;
}

30
C/BasicSyntax/Pointer/work_21.cpp Normal file
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#include <stdio.h>
void sort(int *arr,int m){
bool flag = false;
while(flag == false){
int js=0;
for(int i = 0; i < m-1; i++){
if(*(arr+i)>*(arr+i+1)){
int temp;
temp = *(arr+i+1);
* (arr+i+1) = * (arr+i);
* (arr+i) = temp;
js++;
}
}
if(js==0) flag=true;
}
}
int main(){
int n;
scanf("%d",&n);
int a[n];
for(int i = 0; i < n; i++){
scanf("%d",&a[i]);
}
sort(a,n);
for(int i = 0; i < n; i++){
printf("%d ",a[i]);
}
return 0;
}

59
C/BasicSyntax/Structure/STRUCTURE_test1.cpp Normal file
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#include <stdio.h>
#include <stdlib.h>
#define length sizeof(student)
union age1{
int age2;
char c;
}a;
struct student{
int num;
char name[100];
char sex[100];
union blast{
int age;
char f;
}category;
struct student * next;
};
int main(){
int n;
scanf("%d",&n);
struct student temp,* p,* head,* p2;
printf("Enter By NUMBER NAME SEX AGE\n");
p = (struct student *)malloc(sizeof(struct student));
//head = (struct student *)malloc(sizeof(struct student));
//p2 = (struct student *)malloc(sizeof(struct student));
/*for(int i = 0; i < n; i++){
scanf("%d%s%s%d",&a[i].num,a[i].name,a[i].sex,&a[i].age);
a[i].next = (struct student *)&a[i];
}
<09><><EFBFBD><EFBFBD>ֱ<EFBFBD><D6B1><EFBFBD><EFBFBD>struct<63><74><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><CABD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><D4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4>洢<EFBFBD><E6B4A2><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƕ<EFBFBD>̬<EFBFBD><CCAC><EFBFBD><EFBFBD>
*/
head = p;
int i = 1;
while(i <= n){
scanf("%d%s%s%d",&p->num,p->name,p->sex,&p->category.age);
if(i == n)
{
p->next = NULL;
break;
}
else p2 = (struct student *)malloc(sizeof(struct student));
p->next = p2;
p = p2;
i++;
}
p = head;
while(p!=NULL){
printf("The age of %s is %d, he is a %s\n",p->name,p->category.age,p->sex);
p2 = p;
p = p->next;
free(p2);
}
printf("\n");
//free(p);
//free(head);
//free(p2);
return 0;
}

7
C/BasicSyntax/Structure/Structure_Union.cpp Normal file
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#include <stdio.h>
int main(){
return 0;
}

14
C/BasicSyntax/Structure/Union_test1.cpp Normal file
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#include <stdio.h>
union category{
int a;
char b;
double c;
};
int main(){
union category arse;
return 0;
}

10
C/BasicSyntax/Untitled-1.c Normal file
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@@ -0,0 +1,10 @@
#include <stdio.h>
#include <string.h>
int main(){
char n[200];
getline(n);
printf("Hello, world %s",n);
return 0;
}

14
C/BasicSyntax/blaset/1.cpp Normal file
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@@ -0,0 +1,14 @@
#include <iostream>
using namespace std;
int main(){
int n;
cin >> n;
int* a = new int [n];
int js = 0;
for(int i = 0;i < n;i++){
cin >> a[i];
js += a[i];
}
cout << js <<endl;
return 0;
}

BIN
C/BasicSyntax/blaset/1.o Normal file
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Binary file not shown.

26
C/BasicSyntax/ctest.cpp Normal file
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#include <stdio.h>
/*
printf<EFBFBD><EFBFBD>%d<><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
%5d:<3A><><EFBFBD><EFBFBD>5<EFBFBD><35><EFBFBD>Ҷ<EFBFBD><D2B6>룬<EFBFBD>ո<EFBFBD><D5B8><EFBFBD>
%05d(%.5d)<29><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35><EFBFBD>Ҷ<EFBFBD><D2B6>룬0<EBA3AC><30>
%-5d<35><64><EFBFBD><EFBFBD><EFBFBD><EFBFBD>5<EFBFBD><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>룬<EFBFBD>ո񲹡<D5B8><F1B2B9A1><EFBFBD><EFBFBD><EFBFBD>д%-.5d
printf<EFBFBD><EFBFBD>%c,%s<><73><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
%.2s<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ǰ<EFBFBD><EFBFBD>λ
*/
int main(){
double a=2,b=4;
a/=3;
b/=7;
printf("double:\na = %04.2f%%, b = %55.50f%%\n",a,b);
printf("a = %07f, b = %08f\n",a,b);
int c=345;
printf("int:\nc = %.6d\n",c);
printf("c = %05d\n",c);
printf("c = %-5d\n",c);
double f=123456;
printf("e:\nf = %10.2e\n",f);
char d[]="canyoukissmyass";
printf("string:\n%.2s\n",d);
return 0;
}

44
C/BasicSyntax/fileiostream/file_test1.cpp Normal file
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@@ -0,0 +1,44 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
//f means file
int main(){
FILE * fp, *fout;
fp = fopen("test.dat","rb");
if(fp == NULL){
printf("Damn!");
exit(0);
}
char arr[100];
int i=0;
while(fgetc(fp)!=EOF){
fseek(fp, -1, SEEK_CUR);
arr[i] = fgetc(fp);
i++;
}
arr[i] = '\0';
//printf("%s",arr);
/*
for(int i = 0; i < strlen(arr) ; i++ ){
scanf
}*/
// fput();
fout = fopen("fout.dat","ab");
for(int i = 0; i < strlen(arr) ; i++){
fputc(arr[i], fout);
}
FILE *f1;
f1 = fopen("fout.dat","rb");
while(fgetc(f1)!=EOF){
//putchar(arr[i]);
fseek(f1,-1,1);
putchar(fgetc(f1));
Sleep(50);
}
fclose(fout);
fclose(fp);
return 0;
}

1
C/BasicSyntax/fileiostream/fout.dat Normal file
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@@ -0,0 +1 @@
Hello,World!Hello,World!Hello,World!Hello,World!Hello,World!Hello,World!

1
C/BasicSyntax/fileiostream/test.dat Normal file
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@@ -0,0 +1 @@
Hello,World!

15
C/BasicSyntax/stringctest.cpp Normal file
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@@ -0,0 +1,15 @@
#include <stdio.h>
int main()
{
double sum=0,tmp=1;
/*while((1/tmp)>=1e-6){
sum+=1/tmp;
sum-=1/(tmp+2);
tmp+=4;
printf("%.15f\n",1/(tmp+2));
}
printf("%.15f",4*sum);*/
printf("%.15f\n",0.123e-6);
return 0;
}

13
C/BasicSyntax/test.cpp Normal file
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@@ -0,0 +1,13 @@
#include <iostream>
using namespace std;
int main()
{
int n;
cin>>n;
int s=0;
for(int i=1;i<=n;i++){
s+=i;
}
cout<<s<<endl;
return 0;
}

6
C/BasicSyntax/未命名6.cpp Normal file
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@@ -0,0 +1,6 @@
#include <stdio.h>
#include <string.h>
int main(){
return 0;
}