added Power Digit Sum solution in C

4 files changed, 25 insertions, 15 deletions

diff --git a/16-Power-Digit-Sum/sumexp b/16-Power-Digit-Sum/sumexp
new file mode 100755
index 0000000..854ac69
--- /dev/null
+++ b/16-Power-Digit-Sum/sumexp
diff --git a/16-Power-Digit-Sum/sumexp.c b/16-Power-Digit-Sum/sumexp.c
new file mode 100644
index 0000000..7d471ab
--- /dev/null
+++ b/16-Power-Digit-Sum/sumexp.c
@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <gmp.h>
+
+// Compile Notes: use `gcc <program>.c -lgmp`
+
+
+int main(){
+    mpz_t num, remainder;
+    unsigned long sum = 0;
+    mpz_init(num);
+    mpz_init(remainder);
+    // From docs, this assigns the value num to the value 2^1000
+    mpz_ui_pow_ui(num, 2, 1000);
+    
+    // mpz_sgn returns 1 if positive, 0 if 0, -1 if negative
+    while(mpz_sgn(num)){
+        sum += mpz_mod_ui(remainder, num, 10);
+        mpz_fdiv_q_ui(num, num, 10);
+    }
+    printf("%lu\n", sum);
+    return 0;
+}
+
diff --git a/reworking/WARNING b/reworking/WARNING
new file mode 100644
index 0000000..5ddb825
--- /dev/null
+++ b/reworking/WARNING
@@ -0,0 +1 @@
+The code here doesn't work. Please don't expect it to.
diff --git a/reworking/sumexp.c b/reworking/sumexp.c
deleted file mode 100644
index 8078909..0000000
--- a/reworking/sumexp.c
+++ /dev/null
@@ -1,15 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <gmp.h>
-
-// Compile Notes: use `gcc <program>.c -lgmp`
-
-mpz_t num;
-
-int main(){
-    
-    // From docs, this assigns num the value of (op1*2) ^ op2
-    mpz_mul_2exp(num, )
-    return 0;
-}
-