diff --git a/cv3/program.c b/cv3/program.c
index f32fcf2..18ec73a 100644
--- a/cv3/program.c
+++ b/cv3/program.c
@@ -5,12 +5,12 @@
 int main() {
     double coefs[SIZE] = {0.0};
     double x = 0.0;
-    double input = 0.0;
+    char input;
     int count = 0;
     int length = 0;
     double result = 0.0;
 
-    while (count < SIZE && scanf("%lf", &input) == 1) {
+    while (count < SIZE && scanf("%c", &input) == 1) {
         if (input == 'x') {
             printf("\n x input \n");
             break;