From a0bc12a775273df46e0fb8aa07c86d7986b77c52 Mon Sep 17 00:00:00 2001
From: "sigonasr2, Sig, Sigo" <sigonasr2@gmail.com>
Date: Fri, 15 Jul 2022 14:16:39 +0000
Subject: [PATCH] Co-authored-by: sigonasr2 <sigonasr2@gmail.com>

---
 archives/10/current     | Bin 0 -> 16824 bytes
 archives/10/src/main.c  |  31 +++++++++++++++++++++++++++++++
 archives/10/src/utils.h |   7 +++++++
 current                 | Bin 16696 -> 16824 bytes
 src/main.c              |  38 +++++++++++++++++++-------------------
 5 files changed, 57 insertions(+), 19 deletions(-)
 create mode 100755 archives/10/current
 create mode 100644 archives/10/src/main.c
 create mode 100644 archives/10/src/utils.h

diff --git a/archives/10/current b/archives/10/current
new file mode 100755
index 0000000000000000000000000000000000000000..d5b5ef4a840c616c465f120765cc67ca1cb902e1
GIT binary patch
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diff --git a/archives/10/src/main.c b/archives/10/src/main.c
new file mode 100644
index 0000000..cda1c31
--- /dev/null
+++ b/archives/10/src/main.c
@@ -0,0 +1,31 @@
+#include <stdio.h>
+#include "utils.h"
+
+/*
+The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.
+
+Find the sum of all the primes below two million.
+
+https://projecteuler.net/problem=10
+*/
+int main(int argc,char**argv) {
+    FILE*f=fopen("archives/primegenerator/primes","r");
+    long sum=0;
+    int ch=' ';
+    while ((ch=fgetc(f))!='{');
+    while (true) {
+        int digit=0;
+        while ((ch=fgetc(f))!=',') {
+            digit*=10;
+            digit+=ch-'0';
+        }
+        if (digit>=2000000) {
+            break;
+        } else {
+            sum+=digit;
+        }
+    }
+    fclose(f);
+    printf("\n\nThe sum of all primes below 2000000 is %ld",sum);
+    return 0;
+}
\ No newline at end of file
diff --git a/archives/10/src/utils.h b/archives/10/src/utils.h
new file mode 100644
index 0000000..d785fa2
--- /dev/null
+++ b/archives/10/src/utils.h
@@ -0,0 +1,7 @@
+#define true 1
+#define false 0
+#define boolean char
+struct String{
+    int length;
+    char*str;
+};
\ No newline at end of file
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diff --git a/src/main.c b/src/main.c
index c5cf62a..cda1c31 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2,30 +2,30 @@
 #include "utils.h"
 
 /*
-A Pythagorean triplet is a set of three natural numbers, a < b < c, for which,
+The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.
 
-a2 + b2 = c2
-For example, 32 + 42 = 9 + 16 = 25 = 52.
+Find the sum of all the primes below two million.
 
-There exists exactly one Pythagorean triplet for which a + b + c = 1000.
-Find the product abc.
-
-https://projecteuler.net/problem=9
+https://projecteuler.net/problem=10
 */
 int main(int argc,char**argv) {
-    int a=1;
-    int b=2;
-    int c=997;
-    int sum=0;
-    for (b=2;b<c;b++) {
-        for (a=1;a<b;a++) {
-            int tempC=1000-a-b;
-            if (a*a+b*b==tempC*tempC) {
-                printf("Pythagorean triplet of %d^2+%d^2=%d^2 works for %d+%d+%d=1000\n",a,b,tempC,a,b,tempC);
-                printf("Product is %d",a*b*tempC);
-                return 0;
-            }
+    FILE*f=fopen("archives/primegenerator/primes","r");
+    long sum=0;
+    int ch=' ';
+    while ((ch=fgetc(f))!='{');
+    while (true) {
+        int digit=0;
+        while ((ch=fgetc(f))!=',') {
+            digit*=10;
+            digit+=ch-'0';
+        }
+        if (digit>=2000000) {
+            break;
+        } else {
+            sum+=digit;
         }
     }
+    fclose(f);
+    printf("\n\nThe sum of all primes below 2000000 is %ld",sum);
     return 0;
 }
\ No newline at end of file