draft

programs/p49/info.json

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+{
+  "language": "C",
+  "name": "演習 4-9",
+  "description": "入力した整数値の個数分$+$と$-$を交互に出力するプログラム。",
+  "output": {
+    "type": "screenshot",
+    "content": "./assets/p49.png"
+  },
+  "note": ""
+}

programs/p49/main.c

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+#include <stdio.h>
+
+int main(void) {
+    int n;
+
+    printf("Input positive integer: ");
+    scanf("%d", &n);
+
+    if (n <= 0) {
+        return 1;
+    }
+
+    int i = 0;
+
+    while (i < n) {
+        if (i % 2) {
+            putchar('-');
+        } else {
+            putchar('+');
+        }
+        i++;
+    }
+
+    putchar('\n');
+
+    return 0;
+}