diff --git a/codes/c/chapter_computational_complexity/time_complexity.c b/codes/c/chapter_computational_complexity/time_complexity.c
index d7ffe9021..42509b202 100644
--- a/codes/c/chapter_computational_complexity/time_complexity.c
+++ b/codes/c/chapter_computational_complexity/time_complexity.c
@@ -10,7 +10,6 @@
 int constant(int n) {
     int count = 0;
     int size = 100000;
-    int i = 0;
     for (int i = 0; i < size; i++) {
         count++;
     }
diff --git a/en/codes/c/chapter_computational_complexity/time_complexity.c b/en/codes/c/chapter_computational_complexity/time_complexity.c
index 2094cfa70..b9842a68a 100644
--- a/en/codes/c/chapter_computational_complexity/time_complexity.c
+++ b/en/codes/c/chapter_computational_complexity/time_complexity.c
@@ -10,7 +10,6 @@
 int constant(int n) {
     int count = 0;
     int size = 100000;
-    int i = 0;
     for (int i = 0; i < size; i++) {
         count++;
     }
diff --git a/ja/codes/c/chapter_computational_complexity/time_complexity.c b/ja/codes/c/chapter_computational_complexity/time_complexity.c
index ff4c9c00d..44a353135 100644
--- a/ja/codes/c/chapter_computational_complexity/time_complexity.c
+++ b/ja/codes/c/chapter_computational_complexity/time_complexity.c
@@ -10,7 +10,6 @@
 int constant(int n) {
     int count = 0;
     int size = 100000;
-    int i = 0;
     for (int i = 0; i < size; i++) {
         count++;
     }
diff --git a/ru/codes/c/chapter_computational_complexity/time_complexity.c b/ru/codes/c/chapter_computational_complexity/time_complexity.c
index 56720669b..bcf277f45 100644
--- a/ru/codes/c/chapter_computational_complexity/time_complexity.c
+++ b/ru/codes/c/chapter_computational_complexity/time_complexity.c
@@ -10,7 +10,6 @@
 int constant(int n) {
     int count = 0;
     int size = 100000;
-    int i = 0;
     for (int i = 0; i < size; i++) {
         count++;
     }
diff --git a/zh-hant/codes/c/chapter_computational_complexity/time_complexity.c b/zh-hant/codes/c/chapter_computational_complexity/time_complexity.c
index 280eee938..15ebb12c9 100644
--- a/zh-hant/codes/c/chapter_computational_complexity/time_complexity.c
+++ b/zh-hant/codes/c/chapter_computational_complexity/time_complexity.c
@@ -10,7 +10,6 @@
 int constant(int n) {
     int count = 0;
     int size = 100000;
-    int i = 0;
     for (int i = 0; i < size; i++) {
         count++;
     }