#2.cpp

these are 5 C codes (BorlandC++) realizing the numerical algoriths

#include<stdio.h>
#include<conio.h>
#include<io.h>
#include<stdlib.h>

void main(void)
{

int m[10][10];
int n,i,j,sum1;
//int m1[10],m2[10];
int sum,k;

sum=0;


clrscr();
printf("\nVvedite razmer matricbI: ");
scanf("%d",&n);

while (n<=0)
{
printf("\nRazmer matricbI ne d.b. < libo = 0. Vvedite ego esche raz: ");
scanf("%d",&n);
}

for (i=0;i<n;i++)//    {vvod matricbI}
for (j=0;j<n;j++)
{
printf("\nm[%d%d]=",i+1,j+1,"]=");
scanf("%d",&m[i][j]);
}


for(i=0;i<n;i++)  //vivodim novui massiv
{
for(j=0;j<n;j++)
{
printf("\nmas[%d,%d]=%d",i+1,j+1,m[i][j]);
}}

if(n!=1)
{
k=1;
for (i=0;i<n;i++)
{
sum=sum+m[i][0];
}
while((k!=0)&&(k<=n))
{
for(j=1;j<n;j++)
 {
 sum1=0;
 for(i=0;i<n;i++)
 {
  sum1=sum1+m[i][j];
   }
 if(sum==sum1)
 k++;
 else
 k=0;
}
}
if(k!=0)
{
while ((k!=0)&&(k<=(2*n)))
{
for(i=0;i<n;i++)
 {
 sum1=0;
 for(j=0;j<n;j++)
 {
  sum1=sum1+m[i][j];
   }
 if(sum==sum1)
 k++;
 else
 k=0;
}
}
}
}
else
k=1;
if(k!=0)
printf("\nMatrica iavliaetsia magicheskim kvadratom.");
else
printf("\nMatrica ne iavliaetsia magicheskim kvadratom.");
getch();
}