diff --git a/sum.c b/sum.c
new file mode 100644
index 0000000..0ae0e08
--- /dev/null
+++ b/sum.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+int main() {
+    int n, i, sum = 0;
+
+    printf("Enter a positive integer: ");
+    scanf("%d", &n);
+
+    for (i = 1; i <= n; ++i) {
+        sum += i;
+    }
+
+    printf("Sum = %d", sum);
+    return 0;
+}