diff --git a/proglabs/lab7-8/10.c b/proglabs/lab7-8/10.c
new file mode 100644
index 0000000..07c398a
--- /dev/null
+++ b/proglabs/lab7-8/10.c
@@ -0,0 +1,28 @@
+#include <stdio.h>
+void to_base_n(unsigned long *n, int *b);
+
+int main(void){
+    unsigned long num;
+    int bin;
+    printf("Enter: num base(2-10)\t(q to quit):\n");
+    printf("Enter: ");
+    while (scanf(" %ld %d", &num, &bin) == 2){
+        if(bin>1&&bin<11){
+        to_base_n(&num,&bin);
+        putchar('\n');
+        printf("Enter: ");
+        }else(printf("base is out of range\nEnter: "));
+    }
+    return 0;
+}
+
+void to_base_n(unsigned long *n, int *b){
+    int r;
+    r = *n % *b;
+    if (*n >= *b){
+        *n = *n / *b;
+        to_base_n(n,b);
+    }
+    putchar('0' + (r % *b));
+    return;
+}
diff --git a/proglabs/lab7-8/11.c b/proglabs/lab7-8/11.c
new file mode 100644
index 0000000..006f3c3
--- /dev/null
+++ b/proglabs/lab7-8/11.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+int fibonacci(int n);
+
+int main() {
+    int n;
+    printf("Enter: num\nEnter: ");
+    scanf("%d",&n);
+    printf("fibonacci(%d) = %d",n,fibonacci(n));
+    return 0;
+}
+
+int fibonacci(int n){
+    if(n<=0) return 0;
+    if(n==1) return 1;
+    int a = 0, b = 1, next;
+
+    for(int i = 2;i <= n;i++){
+        next = a + b;
+        a = b;
+        b = next;
+    }
+    return b;
+}  
diff --git a/proglabs/lab7-8/12.c b/proglabs/lab7-8/12.c
new file mode 100644
index 0000000..17262c6
--- /dev/null
+++ b/proglabs/lab7-8/12.c
@@ -0,0 +1,9 @@
+#include <stdio.h>
+
+int main() {
+    int i = 0;
+    while(getchar() != EOF)
+        i++;
+    printf("%d",i);
+    return 0;
+}
diff --git a/proglabs/lab7-8/13.c b/proglabs/lab7-8/13.c
new file mode 100644
index 0000000..6cdb44b
--- /dev/null
+++ b/proglabs/lab7-8/13.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+
+int main(){
+    int ch,c,m[10];
+    ch = c = 0;
+    printf("ascii symb - its num\n");
+    while((ch = getchar()) != EOF){
+        m[c] = ch;
+        c++;
+        if(c == 10){
+            for(c = 0; c < 10; c++){
+                switch(m[c]){
+                    case '\n':
+                        printf(" \\n - %3d ",m[c]);
+                        break;
+
+                    case '\t':
+                        printf(" \\t - %3d ",m[c]);
+                        break;
+
+                    case ' ':
+                        printf("\"%c\" - %3d ",m[c],m[c]);
+                        break;
+
+                    default:
+                        if(m[c]<' '){
+                            printf(" ^%c - %3d  ", m[c] + 64, m[c]);
+                        }else
+                            if(m[c] == 127){
+                            printf(" ^? %3d  ",m[c]);
+                            }else printf("%3c - %3d ",m[c],m[c]);
+                }
+            }
+            printf("\n");
+            c = 0;  
+        }
+    }
+    return 0;
+}
diff --git a/proglabs/lab7-8/14.c b/proglabs/lab7-8/14.c
new file mode 100644
index 0000000..f897901
--- /dev/null
+++ b/proglabs/lab7-8/14.c
@@ -0,0 +1,37 @@
+#include <stdio.h>
+#include <wchar.h>
+#include <locale.h>
+
+int alpha(wchar_t x);
+
+int main() {
+    setlocale(LC_ALL, "");
+    int smol = 0,big = 0,symb = 0;
+    wchar_t x;
+    while((x = getwchar()) != WEOF){
+        switch(alpha(x)){
+            case 1: smol++;break;
+            case 2: big++;break;
+            default: symb++;break;
+        }
+    }
+    printf("Пропись: %d\tСтрочных: %d\tОстальное: %d",smol,big,symb);
+    return 0;
+}
+
+int alpha(wchar_t x){
+    if (x >= L'A' && x <= L'Z')
+        return 2;
+    else if (x >= L'a' && x <= L'z')
+        return 1;
+    else if (x >= L'А' && x <= L'Я')
+        return 2;
+    else if (x >= L'а' && x <= L'я')
+        return 1;
+    else if (x == L'Ё')
+        return 2;
+    else if (x == L'ё')
+        return 1;
+    else
+        return -1;
+}
diff --git a/proglabs/lab7-8/15.c b/proglabs/lab7-8/15.c
new file mode 100644
index 0000000..edac4e9
--- /dev/null
+++ b/proglabs/lab7-8/15.c
@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <wchar.h>
+#include <locale.h>
+int main() {
+    setlocale(LC_ALL, "");
+    float ch = 0,words = 0,o = 0;
+    wchar_t x;
+    while((x = getwchar()) != WEOF){
+        switch(x){
+        case ' ':
+            ch += o;
+            if(o>0) words++;
+            o = 0;
+            break;
+        default:
+        o++;
+        }
+    }
+ 
+    printf("\nch per word - %.2f\n",ch/words);
+    return 0;
+}
diff --git a/proglabs/lab7-8/16.c b/proglabs/lab7-8/16.c
new file mode 100644
index 0000000..85b7a9c
--- /dev/null
+++ b/proglabs/lab7-8/16.c
@@ -0,0 +1,40 @@
+#include <stdio.h>
+
+int main(void){
+    int guess = 1,ext = 1;
+    int x = 50, max = 100, min = 0;
+    printf("Загадайте число 0 - 100, я буду его отгадывать\n");
+    printf("Вы должны сказать, это число меньше, больше или это оно\n");
+    printf("За ответ принимается только l(Меньше) b(Больше) y(Оно)\n");
+    
+    while(ext != 0){
+        printf("Это число %d?\n",x);
+        ext = getchar();
+        while(getchar()!='\n')
+            continue;
+    
+        switch(ext){
+            case 'l':
+                max = x - 1;
+                x = (max+min)/2;
+                guess++;
+                break;
+
+            case 'b':
+                min = x + 1;
+                x = (max+min)/2;
+                guess++;
+                break;
+
+            case 'y':ext = 0;break;
+        }
+        if(x<0||x>100){
+            printf("Вы загадали число за пределами ожиданий!\n");
+            ext=0;
+            break;
+        }
+    }
+    if(x>=0&&x<=100)
+    printf("Загаданное число - %d\t Число угадываний - %d",x,guess);
+    return 0;
+}
diff --git a/proglabs/lab7-8/17.c b/proglabs/lab7-8/17.c
new file mode 100644
index 0000000..f4be46c
--- /dev/null
+++ b/proglabs/lab7-8/17.c
@@ -0,0 +1,11 @@
+#include <stdio.h>
+
+int main(void){
+    int ch;
+    while((ch = getchar()) == ' ')
+        continue;
+    while (getchar() != '\n')
+        continue;
+    printf("%c",ch);
+    return 0;
+}
diff --git a/proglabs/lab7-8/18.c b/proglabs/lab7-8/18.c
new file mode 100644
index 0000000..c9dce57
--- /dev/null
+++ b/proglabs/lab7-8/18.c
@@ -0,0 +1,52 @@
+#include <stdio.h>
+#define t1 8.75
+#define t2 9.33
+#define t3 10.00
+#define t4 11.20
+// #define t 10 //zp
+#define s 40 //sverh
+#define u 1.5 //sverh*
+#define n1 0.15 //tax1
+#define n2 0.2
+#define n3 0.25
+#define m1 300 //maxbeftax2
+#define m2 150
+
+int main() {
+    int h,sw,x,swt,exit,scan;
+    float t,tax,a;
+    exit = x = swt = scan = 1;
+    while(exit){
+        printf("hours: ");
+        scanf("%d", &h);
+        while (getchar() != '\n');
+        do{
+                printf("Choose tarif:\n");
+                printf("a) $%.2f/h\tb) $%.2f/h\n",t1,t2);
+                printf("c) $%.2f/h\td) $%.2f/h\n",t3,t4);
+                printf("q) exit\nInput: ");
+                sw = getchar();
+                switch(sw){
+                    case 'a': t = t1; swt = 0; break;
+                    case 'b': t = t2; swt = 0; break;
+                    case 'c': t = t3; swt = 0; break;
+                    case 'd': t = t4; swt = 0; break;
+                    case 'q': exit = 0; break;
+                }
+            }while(swt&&exit);
+
+        if(!swt && exit){
+            if (h>s){tax = a = (s*t + ((h-s) * (t*u)));}
+            else(tax = a = h*t);  
+
+            if (tax>m1)
+            {
+                if(tax>m2){tax = (m1*n1) + (m2*n2) + ((tax-m1-m2)*n3);}
+                else(tax = (m1*n1) + ((tax-m1)*n2));
+            }
+            else (tax*=n1);
+            printf("Acc: %.3f\nTax: %.3f\nReceived: %.3f\n",a,tax,a-tax);
+        }} 
+
+  return 0;
+}
diff --git a/proglabs/lab7-8/19.c b/proglabs/lab7-8/19.c
new file mode 100644
index 0000000..87f7317
--- /dev/null
+++ b/proglabs/lab7-8/19.c
@@ -0,0 +1,63 @@
+#include <stdio.h>
+
+void calc(int func);
+
+int main() {
+    int exit = 1,sw;
+
+    do{
+        printf("\nВыберите операцию:\n");
+        printf("a) сложение\tb) вычитание\n");
+        printf("c) умножение\td) деление\n");
+        printf("q) exit\nInput: ");
+        sw = getchar();
+        switch(sw){
+            case 'a': calc(1); break;
+            case 'b': calc(2); break;
+            case 'c': calc(3); break;
+            case 'd': calc(4); break;
+            case 'q': exit = 0; break;
+    
+    }}while(exit);
+    return 0;
+}
+
+void calc(int func){
+    float n1,n2;
+    int x;
+    printf("Введите первое число: ");
+    while(scanf(" %f",&n1)!=1){
+        printf("То что вы ввели не является числом.\n");
+        printf("Введите первое число: ");
+        while(getchar()!='\n') continue;
+    } 
+
+    printf("Введите второе число: ");
+    do{
+        x = (scanf(" %f",&n2) != 1);
+        if(x){
+            printf("То что вы ввели не является числом.\n");
+            printf("Введите второе число: ");
+        }else
+            if(n2 == 0&&func==4){
+                printf("Введите число отличное от 0\n");
+                printf("Введите второе число: ");
+                x = 1;
+        }
+        while(getchar()!='\n') continue;
+    }while(x);
+    switch(func){
+        case 1:
+            printf("%f + %f = %f\n",n1,n2,n1+n2);
+            break;
+        case 2:
+            printf("%f - %f = %f\n",n1,n2,n1-n2);
+            break;
+        case 3:
+            printf("%f * %f = %f\n",n1,n2,n1*n2);
+            break;
+        case 4:
+            printf("%f / %f = %f\n",n1,n2,n1/n2);
+            break;
+    }
+}
diff --git a/proglabs/lab7-8/3 b/proglabs/lab7-8/3
new file mode 100755
index 0000000..454673d
Binary files /dev/null and b/proglabs/lab7-8/3 differ
diff --git a/proglabs/lab7-8/5.c b/proglabs/lab7-8/5.c
new file mode 100644
index 0000000..c5d1ea4
--- /dev/null
+++ b/proglabs/lab7-8/5.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+double larger_of(double a, double b);
+
+int main() {
+    double a,b,c;
+    printf("Print: num1 num2\nPrint: ");
+    scanf(" %lf %lf",&a,&b);
+    c = larger_of(a,b);
+    a = c;
+    b = c;
+    printf("Larger value is: %lf",a);
+    return 0;
+}
+
+double larger_of(double a, double b){
+    return ((a>b)?a:b);
+}
diff --git a/proglabs/lab7-8/6 b/proglabs/lab7-8/6
new file mode 100755
index 0000000..92a8cd1
Binary files /dev/null and b/proglabs/lab7-8/6 differ
diff --git a/proglabs/lab7-8/6.c b/proglabs/lab7-8/6.c
new file mode 100644
index 0000000..1a40786
--- /dev/null
+++ b/proglabs/lab7-8/6.c
@@ -0,0 +1,30 @@
+#include <stdio.h>
+void scale(double *a, double *b, double *c);
+
+int main() {
+    double a,b,c;
+    printf("Print: num1 num2 num3\nPrint: ");
+    scanf(" %lf %lf %lf",&a,&b,&c);
+    scale(&a,&b,&c);
+    printf("%lf > %lf > %lf",a,b,c);
+    return 0;
+}
+
+void scale(double *a, double *b, double *c){
+    double result[3];
+    result[0] = *a;
+    result[1] = *b; 
+    result[2] = *c;
+    for (int i = 0; i < 2; ++i) {
+        for (int j = 0; j < 2 - i; ++j) {
+            if (result[j] < result[j + 1]) {
+                double tmp = result[j];
+                result[j] = result[j + 1];
+                result[j + 1] = tmp;
+            }
+        }
+    }
+    *a = result[0];
+    *b = result[1];
+    *c = result[2];
+}
diff --git a/proglabs/lab7-8/7.c b/proglabs/lab7-8/7.c
new file mode 100644
index 0000000..e169203
--- /dev/null
+++ b/proglabs/lab7-8/7.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <wchar.h>
+#include <wctype.h>
+#include <locale.h>
+
+int alpha(wchar_t x);
+
+int main() {
+    setlocale(LC_ALL, "");
+    wchar_t x;
+    while((x = getwchar()) != WEOF){
+        if(iswalpha(x)){
+            wprintf(L"%lc - %d\n",x,alpha(x));
+        }       
+    }
+    return 0;
+}
+
+int alpha(wchar_t x){
+    if (x >= L'A' && x <= L'Z')
+        return x - L'A' + 1;
+    else if (x >= L'a' && x <= L'z')
+        return x - L'a' + 1;
+    else if (x >= L'А' && x <= L'Я')
+        return x - L'А' + 1;
+    else if (x >= L'а' && x <= L'я')
+        return x - L'а' + 1;
+    else if (x == L'Ё' || x == L'ё')
+        return 7;
+    else
+        return -1;
+}
diff --git a/proglabs/lab7-8/8.c b/proglabs/lab7-8/8.c
new file mode 100644
index 0000000..96ab09d
--- /dev/null
+++ b/proglabs/lab7-8/8.c
@@ -0,0 +1,46 @@
+#include <stdio.h>
+double power(double n, int р);
+
+int main(void){
+    double x, xpow;
+    int exp;
+
+    printf("Write: num pow\t(q for exit)\nWrite: ") ;
+
+    while (scanf(" %lf %d", &x, &exp) == 2){
+        xpow = power(x,exp);
+        if (xpow != 0){
+            printf ("%.2lf в степени %d равно %lf\n", x, exp, xpow);}
+        printf("Write: ");
+    }
+    return 0;
+}
+
+double power (double n, int p){
+    if ((p == 0)&&(n == 0)){
+        printf("Result of 0 in pow 0 is undefind\n");
+        return 0;
+    }
+
+    if ((p == 0)||(n == 0)){
+        return 1;
+    }
+
+    if (p>0){
+        double pow = 1;
+        int i;
+        for (i =1; i <= p; i++)
+            pow *= n;
+        return pow;
+    }
+
+    if (p<0){
+        double pow = 1;
+        int i;
+        for (i =1; i <= -p; i++)
+            pow *= n;
+        pow = (1 / pow);
+ 
+        return pow;
+    }
+}
diff --git a/proglabs/lab7-8/9 b/proglabs/lab7-8/9
new file mode 100755
index 0000000..8059347
Binary files /dev/null and b/proglabs/lab7-8/9 differ
diff --git a/proglabs/lab7-8/9.c b/proglabs/lab7-8/9.c
new file mode 100644
index 0000000..8fac608
--- /dev/null
+++ b/proglabs/lab7-8/9.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+void power(double *x, int *exp, double *xpow, int *i);
+
+int main(void){
+    double x, xpow;
+    int exp, i;
+    i = 1;
+
+    printf("Write: num pow\t(q for exit)\nWrite: ") ;
+
+    while (scanf(" %lf %d", &x, &exp) == 2){
+        if ((x == 0) && (exp == 0)){
+            printf("Result of 0 in pow 0 is undefind\n");
+        }
+        else if(exp == 0){xpow = 1;}
+        else({
+            xpow = x;
+            power(&x,&exp,&xpow,&i);
+        });
+    if ((x != 0)||(exp != 0)){
+        printf ("%.2lf в степени %d равно %lf\n", x, exp, xpow);}
+        printf("Write: ");
+    }
+    return 0;
+}
+
+void power (double *x, int *exp, double *xpow, int *i){
+    if(*i<*exp){
+        *xpow = (*xpow * *x);
+        (*i)++;
+        power(x, exp, xpow, i);
+    }else({
+        if (*exp<0) *xpow = (1 / *xpow);
+        (*i) = 1;
+    });
+}
diff --git a/proglabs/lab7-8/test b/proglabs/lab7-8/test
new file mode 100644
index 0000000..7c76ecd
--- /dev/null
+++ b/proglabs/lab7-8/test
@@ -0,0 +1,6 @@
+adaGz7908 
+3123
+ 4
+234
+
+      .././././??'"\\\||"'xXФЫВчя312еЁ
diff --git a/proglabs/lab7-8/tmp.out b/proglabs/lab7-8/tmp.out
new file mode 100755
index 0000000..87031f0
Binary files /dev/null and b/proglabs/lab7-8/tmp.out differ