draft

programs/p42/info.json

@@ -0,0 +1,10 @@
+{
+  "language": "C",
+  "name": "課題2",
+  "description": "教科書の演習4ー2の解答",
+  "output": {
+    "type": "screenshot",
+    "content": "./assets/p42.png"
+  },
+  "note": ""
+}

programs/p42/main.c

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+#include <stdio.h>
+
+int main(void) {
+    int a, b, i, ans;
+
+    printf("Input upper limit: ");
+    (void)scanf("%d", &a);
+    printf("Input lower limit: ");
+    (void)scanf("%d", &b);
+
+    i = b;
+    ans = 0;
+
+    do {
+        ans += i++;
+    } while (i <= a);
+
+    printf("Sum of all integer between %d and %d is %d.\n", b, a, ans);
+
+    return 0;
+}