diff --git "a/4_\320\233\320\260\320\261\320\260_7.cpp" "b/4_\320\233\320\260\320\261\320\260_7.cpp"
new file mode 100644
index 0000000..0cb0b8f
--- /dev/null
+++ "b/4_\320\233\320\260\320\261\320\260_7.cpp"
@@ -0,0 +1,52 @@
+#include <iostream>
+#include <cmath>
+
+using namespace std;
+
+int x,y,s,z;
+string sim;
+
+int main()
+{
+    cout<<"Введите длинну прямоугольника: ";
+    if (cin>>x)
+    {
+        cout <<"Введите высоту прямоугольника: ";
+        if (cin>>y)
+        {
+            if (x<0||y<0)
+            {
+                goto eror;
+            }
+            cout <<"Ввудите символ, которым будет отрисован прямоугольник: ";
+            cin>>sim;
+            z=0;
+            cout <<endl;
+            while (z!=y)
+            {
+            s=0;
+            cout <<"  ";
+            while (s!=x)
+            {
+                cout <<sim;
+                s++;
+            }
+            cout<<endl;
+            z++;
+            }
+            return 0;
+        }
+        else
+        {
+            goto eror;
+        }
+    }
+    else
+    {
+        goto eror;
+    }
+    
+    eror:
+    cout <<endl<<endl<<endl<<endl<<"Введёные символы некоректны";
+    return 0;
+}
diff --git "a/6_\320\233\320\260\320\261\320\260_1.cpp" "b/6_\320\233\320\260\320\261\320\260_1.cpp"
new file mode 100644
index 0000000..9b2356b
--- /dev/null
+++ "b/6_\320\233\320\260\320\261\320\260_1.cpp"
@@ -0,0 +1,22 @@
+#include<iostream>
+#include <cmath>
+
+using namespace std;
+
+int main()
+{
+    const int N=15;
+    int f[N],f0,f1,f2,f3,i,n;
+    f[0]=0;
+    f[1]=3;
+    f[2]=5;
+    cout<<"f[0] = 0"<<endl<<"f[1] = 3"<<endl;
+    for (i=2; i<N; i++)
+    {
+        f[i+1]=f[i]+f[i-1]+f[i-2];
+        cout <<"f["<<i<<"] = "<<f[i]<<endl;
+    }
+    
+    return 0;
+
+}
\ No newline at end of file
diff --git "a/6_\320\233\320\260\320\261\320\260_2.cpp" "b/6_\320\233\320\260\320\261\320\260_2.cpp"
new file mode 100644
index 0000000..2ae154e
--- /dev/null
+++ "b/6_\320\233\320\260\320\261\320\260_2.cpp"
@@ -0,0 +1,147 @@
+#include<iostream>
+#include <cmath>
+
+using namespace std;
+
+int main()
+{
+    int n,t=0,d=1,n1,n2,n3,n4,g,s,s1,s2;
+    string t1,t2,t3,t4;
+    cout<<"Введите число: ";
+    if (cin>>n)
+    {
+        goto doo;
+    }
+    else
+    {
+        goto eror;
+    }
+    doo:
+    n1=n;
+    n2=n;
+    n3=n;
+    n4=0;
+    while(n)
+    {
+        t=t+(n%2)*d;
+        n=n/2;
+        d=d*10;
+    }
+    cout<<t<<endl;
+    n=0,t=0,d=1,g=0;
+    while(n1)
+    {
+        t=t+(n1%8)*d;
+        n1=n1/8;
+        d=d*10;
+    }
+    cout<<t<<endl;
+    n=0,t=0,d=1,s=0,s1=0,s2=0;
+    while(n2)
+    {
+        n4=n3%16;
+
+        if (n4==10)
+        {
+            t1='A';
+        }
+        if (n4==11)
+        {
+            t1='B';
+        }
+        if (n4==12)
+        {
+            t1='C';
+        }
+        if (n4==13)
+        {
+            t1='D';
+        }
+        if (n4==14)
+        {
+            t1='E';
+        }
+        if (n4==15)
+        {
+            t1='F';
+        }
+        if (n4==9)
+        {
+            t1='9';
+        }
+        if (n4==8)
+        {
+            t1='8';
+        }
+        if (n4==7)
+        {
+            t1='7';
+        }
+        if (n4==6)
+        {
+            t1='6';
+        }
+        if (n4==5)
+        {
+            t1='5';
+        }
+        if (n4==4)
+        {
+            t1='4';
+        }
+        if (n4==3)
+        {
+            t1='3';
+        }
+        if (n4==2)
+        {
+            t1='2';
+        }
+        if (n4==1)
+        {
+            t1='1';
+        }
+        if (n4==0)
+        {
+            t1='0';
+        }
+        
+        
+        if (g==0)
+        {
+            t2=t1;
+            s=1;
+        }
+        if (g==1)
+        {
+            t3=t1;
+            s1=1;
+        }
+        if (g==2)
+        {
+            t4=t1;
+            s2=1;
+        }
+        g++;
+        n2=n2/16;
+        n3=n3/16;
+        d=d*10;
+    }
+    if (s2==1)
+    {
+        cout <<t4;
+    }
+    if (s1==1)
+    {
+        cout <<t3;
+    }
+    if (s==1)
+    {
+        cout <<t2;
+    }
+     return 0;
+
+  eror:
+    cout <<endl<<endl<<endl<<endl<<endl<<endl<< "Введённые символы некоректны";
+     return 0;
+}
\ No newline at end of file
diff --git "a/7_\320\233\320\260\320\261\320\260_2.cpp" "b/7_\320\233\320\260\320\261\320\260_2.cpp"
new file mode 100644
index 0000000..d806d59
--- /dev/null
+++ "b/7_\320\233\320\260\320\261\320\260_2.cpp"
@@ -0,0 +1,117 @@
+#include<iostream>
+#include <cmath>
+
+using namespace std;
+
+int main()
+{
+    int h,h1,s,s1,k,z,z1;
+    string t;
+    
+    cout <<endl;
+    k=0;
+    h=4;
+    s=1;        
+    s1=0;
+    h1=0;
+    t='@';
+    while (h1!=h)
+    {           
+        cout <<"  ";
+        while(s1!=s)
+        {
+            cout <<t;
+            s1++;
+        }  
+        s1=0;
+        s=s+1;
+        cout <<endl;
+        h1++;
+    }
+    
+    cout <<endl;
+    k=0;
+    h=4;
+    s=4;        
+    s1=0;
+    h1=0;
+    t='#';
+    while (h1!=h)
+    {           
+        cout <<"  ";
+        while(s1!=s)
+        {
+            cout <<t;
+            s1++;
+        }  
+        s1=0;
+        s=s-1;
+        cout <<endl;
+        h1++;
+    }
+    
+     cout <<endl;
+    k=0;
+    h=4;
+    s=1;        
+    s1=0;
+    h1=0;
+    z1=0;
+    z=4;
+    t='$';
+    while (h1!=h)
+    {           
+        cout <<"  ";\
+        while(z1!=z)
+        {
+            cout <<" ";
+            z1++;
+        }
+        z1=0;
+        z=z-1;
+        while(s1!=s)
+        {
+            cout <<t;
+            s1++;
+        }  
+        s1=0;
+        s=s+1;
+        cout <<endl;
+        h1++;
+    }
+    
+      cout <<endl;
+    k=0;
+    h=4;
+    s=4;        
+    s1=0;
+    h1=0;
+    z1=0;
+    z=1;
+    t='%';
+    while (h1!=h)
+    {           
+        cout <<"  ";\
+        while(z1!=z)
+        {
+            cout <<" ";
+            z1++;
+        }
+        z1=0;
+        z=z+1;
+        while(s1!=s)
+        {
+            cout <<t;
+            s1++;
+        }  
+        s1=0;
+        s=s-1;
+        cout <<endl;
+        h1++;
+    }
+
+
+
+    return 0;
+
+}
\ No newline at end of file