wrote most of report

programs/demo.c

@@ -0,0 +1,6 @@
+void main(void) {
+    int a;
+    a = 255;
+
+    return;
+}

programs/prog1.c

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+#include <stdio.h>
+
+int main(void) {
+    printf("C言語");
+    return 0;
+}

programs/prog2.c

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+#include <stdio.h>
+
+int main(void) {
+    printf("C\n");
+    printf("言\n");
+    printf("語\n");
+
+    return 0;
+}

programs/prog3.c

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+#include <stdio.h>
+
+int main(void) {
+    printf("情\n");
+    printf("　報\n");
+    printf("　　処\n");
+    printf("　　　理\n");
+
+    return 0;
+}

programs/prog4.c

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+#include <stdio.h>
+
+int main(void) {
+    int y = 2007;
+    int m = 8;
+    int d = 7;
+
+    printf("柴田健琉の生年月日の和は%dです。\n", y+m+d);
+
+    return 0;
+}