Chapter4

DeitelC/Chapter4/PrimeNums.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+
+int main(void) {
+    puts("Show all prime numbers until: ");
+    int i;
+    if(scanf("%d", &i) != 1 || i < 2) {
+    puts("ERROR, entered integer NOT valid!");
+    }
+
+    for(int y = 2; y < i; y++) {
+    int counter = 0;
+        for(int a = 2; a < y; a++) {
+            if(y % a == 0) {
+                counter = 1;
+            }
+        }
+    if (!counter) {
+        printf("%d\t", y);
+    }
+    }
+}