Fix add_preceding_zeros to insert at correct index

diff --git a/camera.cpp b/camera.cpp
index c595734bc203ed6d9151267ad83797b535fca601..8c0633c8848adde9f7cab7d235b6e7d263d190b0 100644 (file)
--- a/camera.cpp
+++ b/camera.cpp
@@ -93,11 +93,11 @@ unsigned int convert_uint(std::vector<bool> &vec){
 std::string add_preceding_zeros(unsigned int n){
        std::string result = std::to_string(n);
        if (result.size() == 1){
-               result.insert(result.begin(), 0);
-               result.insert(result.begin(), 0);
+               result.insert(0, "0");
+               result.insert(0, "0");
        }
        else if (result.size() == 2){
-               result.insert(result.begin(), 0);
+               result.insert(0, "0");
        }
        return result;
 }