diff --git a/code_study/Baekjoon/c/4458.c b/code_study/Baekjoon/c/4458.c
new file mode 100644
index 0000000..91eb7c1
--- /dev/null
+++ b/code_study/Baekjoon/c/4458.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+int main() {
+    int N;
+    char S[31];
+    scanf("%d", &N);
+    getchar();
+
+    while(N--) {
+        gets(S);
+        if('a' <= S[0] && S[0] <= 'z') S[0] -= ('a' - 'A');
+        printf("%s\n",S);
+    }
+
+    return 0;
+}
\ No newline at end of file