質問編集履歴
1
コードの修正
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File without changes
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@@ -2,28 +2,30 @@
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C言語で2つのポインタでデータとアドレスを表示するというコードを書いています。イメージの図は以下の様です。
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コンパイル時に以下のようなエラーが出ています。
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###発生している問題・エラーメッセージ
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```C
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% gcc -Wall ex2_2_1.c -o ex2_2_1
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ex2_2_1.c: In function
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ex2_2_1.c: In function 〓〓〓main〓〓〓:
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10
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ex2_2_1.c:9:7: error: conflicting types for
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11
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ex2_2_1.c:9:7: error: conflicting types for 〓〓〓p〓〓〓
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int p = 5;
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^
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ex2_2_1.c:5:7: note: previous declaration of
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ex2_2_1.c:5:7: note: previous declaration of 〓〓〓p〓〓〓 was here
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int*p;
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^
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ex2_2_1.c:10:7: error: conflicting types for
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ex2_2_1.c:10:7: error: conflicting types for 〓〓〓a〓〓〓
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int*a;
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^
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ex2_2_1.c:4:7: note: previous definition of
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ex2_2_1.c:4:7: note: previous definition of 〓〓〓a〓〓〓 was here
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int a = 10;
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^
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ex2_2_1.c:14:10: warning: format
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ex2_2_1.c:14:10: warning: format 〓〓〓%d〓〓〓 expects argument of type 〓〓〓int〓〓〓, but argument 2 has type 〓〓〓int *〓〓〓 [-Wformat=]
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printf("
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printf("value of a =%d\n", a);
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^
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ex2_2_1.c:15:10: warning: format
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ex2_2_1.c:15:10: warning: format 〓〓〓%p〓〓〓 expects argument of type 〓〓〓void *〓〓〓, but argument 2 has type 〓〓〓int〓〓〓 [-Wformat=]
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printf("
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printf("address of a =%p\n", p);
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^
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```
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###該当のソースコード
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@@ -40,9 +42,11 @@
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int*a;
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a = &p;
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//print
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//print
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printf("value of a =%d\n", a);
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printf("
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printf("address of a =%p\n", p);
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printf("value of p =%d\n", p);
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printf("
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printf("address of p=%p\n", a);
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return 0;
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}
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