diff --git a/Submissions/ShagunRatan/BuySell/Screenshot (108).png b/Submissions/ShagunRatan/BuySell/Screenshot (108).png
new file mode 100644
index 0000000..f2671b1
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diff --git a/Submissions/ShagunRatan/BuySell/solution.c b/Submissions/ShagunRatan/BuySell/solution.c
new file mode 100644
index 0000000..b9139ff
--- /dev/null
+++ b/Submissions/ShagunRatan/BuySell/solution.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+
+int maxProfit(int* prices, int pricesSize) {
+    int minPrice = prices[0];
+    int maxProfit = 0;
+
+    for (int i = 1; i < pricesSize; i++) {
+        if (prices[i] < minPrice)
+            minPrice = prices[i];
+        else if (prices[i] - minPrice > maxProfit)
+            maxProfit = prices[i] - minPrice;
+    }
+
+    return maxProfit;
+}
diff --git a/Submissions/ShagunRatan/Two Sum/Screenshot (107).png b/Submissions/ShagunRatan/Two Sum/Screenshot (107).png
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index 0000000..17ba62d
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diff --git a/Submissions/ShagunRatan/Two Sum/solution.c b/Submissions/ShagunRatan/Two Sum/solution.c
new file mode 100644
index 0000000..98d88fa
--- /dev/null
+++ b/Submissions/ShagunRatan/Two Sum/solution.c	
@@ -0,0 +1,19 @@
+#include <stdio.h>
+
+
+int* twoSum(int* nums, int numsSize, int target, int* returnSize) {
+    static int result[2]; 
+    for (int i = 0; i < numsSize; i++) {
+        for (int j = i + 1; j < numsSize; j++) {
+            if (nums[i] + nums[j] == target) {
+                result[0] = i;
+                result[1] = j;
+                *returnSize = 2;
+                return result;
+            }
+        }
+    }
+
+    *returnSize = 0; 
+    return NULL;
+}