Initial commit

.gitignore

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+**/build

10-23/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.0.0)
+project(10-23 VERSION 0.1.0)
+
+include(CTest)
+enable_testing()
+
+add_executable(10-23 main.c)
+
+set(CPACK_PROJECT_NAME ${PROJECT_NAME})
+set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
+include(CPack)

10-23/main.c

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+#include <stdio.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdlib.h>
+
+void al(int i){
+    if(i == SIGALRM){
+        printf("alarm\n");
+        signal(SIGALRM, al);
+    }
+}
+
+int main(){
+    signal(SIGALRM, al);
+    pause();
+    return 0;
+}