commit

du1/program.c

@@ -0,0 +1,46 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+
+#define LINE_SIZE 1024
+
+int main() {
+    char line[LINE_SIZE];
+    char* endptr = NULL;
+    char* start = NULL;
+
+    memset(line, 0, LINE_SIZE);
+    char* r1 = fgets(line, LINE_SIZE, stdin);
+    assert(r1 != NULL);
+
+    double x = strtod(line, NULL);
+
+    memset(line, 0, LINE_SIZE);
+    char* r2 = fgets(line, LINE_SIZE, stdin);
+    assert(r2 != NULL);
+
+    int len = strlen(line);
+    start = line;
+
+    double result = 0.0;
+    int first = 1;
+
+    while (start < (line + len)) {
+        double val = strtod(start, &endptr);
+
+        if (start != endptr) {
+            if (first) {
+                result = val;
+                first = 0;
+            } else {
+                result = result * x + val;
+            }
+            start = endptr;
+        } else {
+            break;
+        }
+    }
+
+    return 0;
+}