feat: update structure

cs2106/labs/lab2/part1/autograder/ref/sum.c

@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "utils.h"
+
+#define MAX_STR_LEN 128
+
+void strip(char *str) {
+    while(*str) {
+        if(*str == '\n')
+            *str = '\0';
+        str++;
+    }
+}
+
+int main() {
+    char str[MAX_STR_LEN];
+    int nums[128];
+    int count=0;
+    int res = 0;
+
+    while(!feof(stdin)) {
+        char *res = fgets(str, MAX_STR_LEN, stdin);
+
+        if(res){
+            strip(str);
+            int val = atoi(str);
+
+            if(val){
+                nums[count++] = val;
+            }
+            else
+                printf("%s is not a non-zero integer.\n", str);
+        }
+    }
+
+    res = sum(nums, count);
+    printf("Item count is %d\n", count);
+    printf("The sum is %d\n", res);
+    exit(res);
+}
+