Language
C
Compiler
gcc HEAD 12.0.0 20210521 (experimental)
Options
Warnings
C11(GNU)
no pedantic
$ gcc prog.c -Wall -Wextra -std=gnu11 Exit Code:
1
Author
anonymous
about 4 years ago
C
gcc HEAD 12.0.0 20210521 (experimental)
Author
anonymous
about 4 years ago
$ gcc prog.c -Wall -Wextra -std=gnu11 prog.c: In function 'main':
prog.c:10:20: error: 'a' undeclared (first use in this function)
10 | printf("%d\n", a); // ここで a が消えているためエラーになる
| ^
prog.c:10:20: note: each undeclared identifier is reported only once for each function it appears in