Compiling the following code using gcc-5.1.0 produces a warning:使用gcc-5.1.0编译以下代码会产生警告: warning: implicit declaration of function ‘abs’ [-Wimplicit-function-declaration] 1. Code:码: #include <stdio.h> #include <math.h> int main (void) { printf ("%d\n", abs (-1)); ...
warning: implicit declaration of function‘abs’ [-Wimplicit-function-declaration] Code: 码: #include <stdio.h> #include <math.h> int main (void) { printf ("%d\n", abs (-1)); return 0; } I have compiled the same code with gcc-4.9.2 and it's not producing any warning. 我...
gcc -Wimplicit -c test_implicit.c test_implicit.c:7: warning: return type defaults to `int’ test_implicit.c: In function `test’: test_implicit.c:18: warning: implicit declaration of function `sub’ [-Wmissing-braces] 当聚合类型或者数组变量的初始化表达式没有’充分’用括号{}括起时,给...
gcc -Wimplicit -c test_implicit.c test_implicit.c:7: warning: return type defaults to `int' test_implicit.c: In function `test': test_implicit.c:18: warning: implicit declaration of function `sub' [-Wmissing-braces] 当聚合类型或者数组变量的初始化表达式没有'充分'用括号{}括起时,给出警...
test_implicit.c: In function `test': test_implicit.c:18: warning: implicit declaration of function `sub' [-Wmissing-braces] 当聚合类型或者数组变量的初始化表达式没有'充分'用括号{}括起时,给出警告。文字表述很难理解,举例说明则清晰些。看下面的例子: ...
./test.c:10:14: warning: implicit declaration of function ‘basename’ [-Wimplicit-function-...
使用gcc编译c文件出现如下错误:getIP.c:14: warning: implicit declaration of function ‘gethostname’ getIP.c:20: warning: implicit declaration of function ‘getaddrinfo’ getIP.c:21: error: dereferencing pointer to incomplete type getIP.c:23: error: dereferencing pointer to incomplete type get...
20、数常量是一个 GCC 扩展 imaginary number in preprocessor expression 预处理表达式中出现虚数 impossible operator %u 不可能的操作%u In _cpp_valid_ucn but not a UCN 在 _cpp_valid_ucn 中但不是一个 UCN incompatible implicit declaration of built-in function 'printf' 与内置的printf函数隐式声明不兼...
pow.c: In function `main': pow.c:5: warning: implicit declaration of function `pow' 程序编译成功,但gcc给出警告: pow函数隐式声明。 $./pow_2.95 The cube of 2.0 is 1.000000 明显执行结果是错误的,在源程序中引入头文件(#include <math.h>),消除了错误。
incompatible implicit declaration of built-in function 'printf' 与内置的printf函数隐式声明不兼容。 incomplete universal character name %.*s 不完全的 Unicode 字符名 %.*s initialization discards qualifiers from pointer target type 初始化取消了指针目标类型的限定。 initialization from incompatible pointer ty...