#include <iostream>
#include <math.h>
using namespace std;
void main()
{int n,a,k,b,i=0,j=0,t=0;
int* m;
cout<<"vvedite kolichestvo gorodov:"<<"\n";
cin>>n;
m= new int[n,n];
for(int q=0;q<=n;q++)
{
for(int r=0;r<=n;r++)
m[q,r]=0;
}
cout<<"vvodite\n";
while((i>=0) && (j>=0) && (t>=0))
{
cin>>t;
if(t>0)
i=t;
else
break;
cin>>t;
if(t>0)
j=t;
else
break;
cin >> t;
if((i>0) && (j>0) && (t>0))
{
m[i,j]=t;
m[j,i]=t;
}
else
break;
}

for (i=0; i<=n; i++)
a=a+m[0,i];
for (i=1; i<=n; i++)
{
for (int j=0; j<=n; j++)
{
b=b+m[i,j];
}
if(b<a)
{
a=b;
k=i;
}
}
cout << " Gorod s minimalnoy summoy rasstoyaniy do ostalnix gorodov: " << k;
cout << endl;
}

#include <iostream.h>
#include <conio.h>
void main()
{
int n,l,k,t,L,M,i,j;
cout<<"pa3Mep:";
cin>>n;

cout<<"M";
cin>>M;
cout<<"L";
cin>>L;

char **A,**B;
A=new char*[n];
for(i=0;i<L;i++)
A[i]=new char[L];
for(i=0;i<L;i++)
for(j=0;j<L;j++)
cin>>A[i][j];// это я массив ввожу

t=0;
for(i=0;A[i]!='0';i++)
for(j=0;A[j]!='0';j++)
t++;//вот тут у меня большие вопросы,так как этим циклом я хотел посчитать количество введенных символов в массив А

B=new char*[n];
for(i=0;i<n;i++)
B[i]=new char[M];
k=M%t;
l=t-k*M;
A[i][j]=B[k][l];
for(i=0;i<n;i++)
for(j=0;j<n;j++)
cout<<B[k][l];
}

#include "stdafx.h"
#include "math.h"
#include "iostream.h"

double funcR (int n, double*x,double*y)
{
int i; double s1=0, s2=0, s4=0, s5=0, s6=0, Mx, My, R;
for(i=0; i<n-1; i++)
{
s1=s1+x[i]; s2=s2+y[i];Mx=s1/n;
My=s2/n; s4=s4+((x[i]-Mx)*(y[i]-My));
s5=s5+((x[i]-Mx)*(x[i]-Mx));
s6=s6+((y[i]-My)*(y[i]-My));
}
R=s4/(sqrt(s5*s6)); return®;
}

double funcA1 (int n, double*x, double*y)
{
int i; double s1=0, s2=0, s3=0, s7=0, A1;
for (i=0;i<n-1; i++)
{
s1=s1+x[i]; s2=s2+y[i]; s3=s3+y[i]*x[i]; s7=s7+x[i]*x[i];
}
A1=(n*s3-s2*s1)/(n*s7-s1*s1);
return (A1);
}

double funcA0 (int n, double*x, double*y, double A1)
{
int i; double s1=0, s2=0, A0;
for (i=0; i<n-1; i++)
{
s1=s1+x[i];
s2=s2+y[i];
}
A0=s2/n-A1*s1/n;
return (A0);
}
int main()
{
int n, i,k; double*X, *Y, F[20],a1,a0,r,f[10];
cout<<"kol-vo exp dannih="; cin>>n;
X=new double[n];
cout<<"vvedite momenti vremeni:\n";
for(i=0;i<n;i++) cin>>*(X+i);
Y=new double[n];
cout<<"vvedite zna4enia temperatur:\n";
for(i=0; i<n; i++) cin>> *(Y+i);
a1=funcA1(n,X,Y);
a0=funcA0(n,X,Y,a1);
r=funcR(n,X,Y);
cout<<"vvedite kol-vo momentov vremeni dlya vi4islenia zna4eniy ojid temperatur\n";
cin>>k;
cout<<"vvedide momenti vremeni dlya vi4islenia zna4eniy ojid. temperatur\n";
for(i=0;i<k;i++)
cin>>f[i];
cout<<"zna4enia ojid. temperatur\n";
for(i=0;i<k;i++)
{
F[i]=a0+a1*f[i];
cout<<"\n"<<F[i];
}
cout<<"koef-ti linii regressii\n"<<a0<<";"<<a1<<"\n";
cout<<"koef korrelyatsii:\n"<<r;
return(0);
}

include <stdio.h>
#include <stdlib.h>
struct liter {
char name [30];
char dr[10];
char proza[30];
struct liter *start;
struct liter *last;
struct liter *next;
struct liter *prior;
};
enter(),search(),save();
load(),menu_select(),mdelete();
{
for (;;)
{
switch (menu_select()) {
case 1: enter();
break;
case 2: search();
break;
case 3: save();
break;
case 4: load();
break;
case 5: exit();
}
}
return 0;
}
{
menu_select()
printf ("1. Vvod imeni\n");
printf ("2. Poisk\n");
printf ("3. Sohranit\n");
printf ("4. Zagryzit\n");
printf ("5. Vihod\n");
}
enter()
{
struct *dann;
for (;;) {
dann =(struct litera *) malloc (sizeof (struct (struct litera));
if (!info) {
printf ("\n Net svobodnoi pamati");
return;
}
inputs (" vvedite ima:", dann->name,30);
inputs (" vvedite droshdenia:", dann->dr,10);
inputs ("vvedite proizvedenia:", dann -> proza, 30);
}
}
search()
{
char name [50];
struct liter *dann;
printf ("vvedite ima:");
gets(name);
dann = dann(name);
if (!dann) printf(" Nety takova\n")
else display (dann);
}
save()
{
struct liter *info;
FILE *fp;
fp=fopen("mlist", "wb");
if (!fp) {
printf(" Nevozmoshno otkrit fail.\n");
exit(1);
}
printf(" Nevozmoshno sohranenie v faile\n");
info = start;
while(info) {
fwrite(info, sizeof (struct address), 1,fp);
info = info->next;
}
fclose(fp);
}
load()
{
struct liter *info;
FILE *fp;
fp=fopen ("mlist", "rb");
if (!fp) {
printf(" Nevozmoshno otkrit fail\n");
exit(1);
}
mdelete()
char s[80];
inputs (" vvedite ima: ",s,30);
info = find(s);
if (info) {
if (*start==info) {
*start=info->next;
if(*start) (*start)->prior = NULL;
else *last = NULL;
}
else {
info prior->next = info->next;
if(info!=*last)
info->next->prior = info->prior;
else
*last = info->prior;
}
free(info);
}
}

#include <stdio.h>
#include <math.h>
#include <conio.h>
#include <iostream.h>
#include <time.h>
#include <string.h>
struct F1
{
char nazv[10], st[10], yaz[10];
int pl,nasstr;
};
struct F2
{
char nazv[10], st[10];
int nasstol;
};
void main()
{
clrscr();
int vv,n=0;
FILE *in1, *in2;
in1=fopen("1.dat","a+b");
in2=fopen("2.dat", "a+b");
F1 a1;
F2 a2;
cout<<"Esche stranu?(1-da/0-net): ";
cin>>vv;
while(vv==1)
{
cout<<"Vvedite dannie stran:\n";
cout<<"Nazvanie: "; cin>>a1.nazv;
cout<<"Stolica: "; cin>>a1.st;
cout<<"Yazik: "; cin>>a1.yaz;
cout<<"Ploschad: "; cin>>a1.pl;
cout<<"Naselenie trani: "; cin>>a1.nasstr;
cout<<"Naselenie stolici: "; cin>>a2.nasstol;
strcpy(a2.nazv,a1.nazv);
strcpy(a2.st,a1.st);
n++;
fwrite(&a1, sizeof(a1), 1, in1);
fwrite(&a2, sizeof(a2), 1, in2);
do
{
cout<<"Esche stranu?(1-da/0-net): ";
cin>>vv;
}
while(vv!=1&&vv!=0);
}
int i;
F1 *str1=new F1 [n];
F2 *str2=new F2 [n];
for(i=0;i<n;i++)
{
fread(&str1[i], sizeof(str1[i]), 1, in1);
fread(&str2[i], sizeof(str2[i]), 1, in2);
}
F1 max;
for(i=0;i<n;i++)
if(str1[i].nasstr>str1[i+1].nasstr)
max=str1[i];
cout<<"\n"<<max.nazv;
cout<<"\n"<<max.st;
cout<<"\n"<<max.yaz;
cout<<"\n"<<max.pl;
cout<<"\n"<<max.nasstr;
fclose(in1);
fclose(in2);
getch();
}

#include <stdio.h>
#include <math.h>
#include <conio.h>
#include <iostream.h>
#include <time.h>
#include <string.h>
struct F1
{
char nazv[10], st[10], yaz[10];
int pl,nasstr;
};
struct F2
{
char nazv[10], st[10];
int nasstol;
};
void main()
{
clrscr();
int vv,n=0;
FILE *in1, *in2;
in1=fopen("1.dat","w+b");
in2=fopen("2.dat", "w+b");
F1 a1;
F2 a2;
cout<<"Esche stranu?(1-da/0-net): ";
cin>>vv;
while(vv==1)
{
cout<<"Vvedite dannie stran:\n";
cout<<"Nazvanie: "; cin>>a1.nazv;
cout<<"Stolica: "; cin>>a1.st;
cout<<"Yazik: "; cin>>a1.yaz;
cout<<"Ploschad: "; cin>>a1.pl;
cout<<"Naselenie strani: "; cin>>a1.nasstr;
cout<<"Naselenie stolici: "; cin>>a2.nasstol;
strcpy(a2.nazv,a1.nazv);
strcpy(a2.st,a1.st);
n++;
fwrite(&a1, sizeof(a1), 1, in1);
fwrite(&a2, sizeof(a2), 1, in2);
do
{
cout<<"Esche stranu?(1-da/0-net): ";
cin>>vv;
}
while(vv!=1&&vv!=0);
}
rewind(in1);
rewind(in2);
int i;
F1 *str1=new F1 [n];
F2 *str2=new F2 [n];
for(i=0;i<n;i++)
{
fread(&str1[i], sizeof(str1[i]), 1, in1);
fread(&str2[i], sizeof(str2[i]), 1, in2);
}
F1 max;
max=str1[0];
for(i=0;i<n;i++)
if(str1[i].nasstr>max.nasstr)
max=str1[i];
F1 tmp1;
F2 tmp2;
int j;
for(i=0;i<n-1;i++) //сортировка
for(j=0;j<n-i-1;j++) //первого
if(str1[j].nazv>str1[j+1].nazv) //массива
{ //
tmp1=str1[j]; //
str1[j]=str1[j+1] ; //
str1[j+1]=tmp1; //
} //
for(i=0;i<n-1;i++) //сортировка
for(j=0;j<n-i-1;j++) //второго
if(str2[j].nazv>str2[j+1].nazv) //массива
{ //
tmp2=str2[j]; //
str2[j]=str2[j+1] ; //
str2[j+1]=tmp2; //
} //
cout<<"\n"<<max.nazv;
cout<<"\n"<<max.st;
cout<<"\n"<<max.yaz;
cout<<"\n"<<max.pl;
cout<<"\n"<<max.nasstr;
fclose(in1);
fclose(in2);
getch();
}