diff --git a/solutions/sharafat/10/1.c b/solutions/sharafat/10/1.c
new file mode 100644
index 0000000..f145b66
--- /dev/null
+++ b/solutions/sharafat/10/1.c
@@ -0,0 +1,18 @@
+#include<stdio.h>
+
+int a = 10, b = 20;
+
+void swap (void)
+{
+    b = a + b ;
+    a = b - a ;
+    b = b - a ;
+}
+
+int main()
+{
+    printf("Before swap: a = %d, b = %d\n", a, b);
+    swap();
+    printf("After swap: a = %d, b = %d\n", a, b);
+    return 0;
+}
\ No newline at end of file