Changes to be committed:

new file:   proglabs/lab7-8/10.c
	new file:   proglabs/lab7-8/11.c
	new file:   proglabs/lab7-8/12.c
	new file:   proglabs/lab7-8/13.c
	new file:   proglabs/lab7-8/14.c
	new file:   proglabs/lab7-8/15.c
	new file:   proglabs/lab7-8/16.c
	new file:   proglabs/lab7-8/17.c
	new file:   proglabs/lab7-8/18.c
	new file:   proglabs/lab7-8/19.c
	new file:   proglabs/lab7-8/3
	new file:   proglabs/lab7-8/5.c
	new file:   proglabs/lab7-8/6
	new file:   proglabs/lab7-8/6.c
	new file:   proglabs/lab7-8/7.c
	new file:   proglabs/lab7-8/8.c
	new file:   proglabs/lab7-8/9
	new file:   proglabs/lab7-8/9.c
	new file:   proglabs/lab7-8/test
	new file:   proglabs/lab7-8/tmp.out

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;
+}