输出C语言中 变量的类型

使用gcc的警告信息间接知道变量的类型

 

#include <stdio.h>

#include <stdlib.h>

#include <stddef.h>

#include <string.h>



int

main()

{

        int a[2][10];



        printf("%d\n", a[0]);

        printf("%d\n", a);

        printf("%d\n", a + 1);



        exit(0);

}

[root@localhost transform]# gcc -o test -Wall -g test.c

test.c: In function ‘main’:

test.c:14: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘int *’

test.c:15: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘int (*)[10]’

test.c:16: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘int (*)[10]’

gcc 的选项中加入 -Wall 即可