将struct fileds初始化为零

22 printf（" str1.i =％d \t str1.f =％f \ t str1.c =％d \ t str1.pi =％ p \ n"，str1.i，str1 .f，str1.c，str1.pi）; 23 printf （" str1.s2.i1 =％d \ n"，str1.s2.i1）; 24返回0; 25} 请告诉我为什么gcc会抱怨。 这不是初始化结构字段的标准吗？Hi all,The following program is compiled using gcc with "-W" option. GCC isgiving the following warning messageinitStructElem.c: In function `main'':initStructElem.c:20: warning: missing initializerinitStructElem.c:20: warning: (near initialization for `str1.f'')Here is the program1 #include <stdio.h>23 int main(void)4 {5 typedef struct6 {7 int i1;8 float f1;9 }str_1t;1011 typedef struct12 {13 int i;14 float f;15 char c;16 int *pi;17 str_1t s2;18 }str_t;1920 str_t str1={0};2122 printf("str1.i=%d\t str1.f=%f\t str1.c=%d\tstr1.pi=%p\n",str1.i,str1 .f,str1.c,str1.pi);23 printf("str1.s2.i1=%d\n",str1.s2.i1);24 return 0;25 }Please let me know why gcc is complaining.Is this not a standard of way of intializing structure fields?推荐答案 va******@rediffmail.com ??? ????? va******@rediffmail.com ???é?????大家好，以下程序是使用带有-W的gcc编译的。选项。 GCC发出以下警告信息 initStructElem.c：在函数`main''中： initStructElem.c：20：警告：缺少初始化程序 initStructElem。 c：20：警告:(接近初始化为'str1.f''） 这是程序 1 #include< stdio.h> 2 3 int main（void） 4 { 5 typedef struct 6 { 7 int i1; 8 float f1; 9} str_1t; 10 11 typedef struct 12 { 13 int i; 14 float f; 15 char c; 16 int * pi; 17 str_1t s2; 18} str_t; 19 20 str_t str1 = {0}; 21 22 printf（ " str1.i =％d \t str1.f =％f \t str1.c =％d \ t str1.pi =％p \ n"，str1.i，str1。 f，str1.c，str1.pi）; 23 printf（" str1.s2.i1 =％d \\ t n"，str1.s2.i1）; 24返回0; 25} 请让我知道gcc为什么抱怨。这不是初始化的标准结构字段？ Hi all, The following program is compiled using gcc with "-W" option. GCC is giving the following warning message initStructElem.c: In function `main'': initStructElem.c:20: warning: missing initializer initStructElem.c:20: warning: (near initialization for `str1.f'') Here is the program 1 #include <stdio.h> 2 3 int main(void) 4 { 5 typedef struct 6 { 7 int i1; 8 float f1; 9 }str_1t; 10 11 typedef struct 12 { 13 int i; 14 float f; 15 char c; 16 int *pi; 17 str_1t s2; 18 }str_t; 19 20 str_t str1={0}; 21 22 printf("str1.i=%d\t str1.f=%f\t str1.c=%d\t str1.pi=%p\n",str1.i,str1 .f,str1.c,str1.pi); 23 printf("str1.s2.i1=%d\n",str1.s2.i1); 24 return 0; 25 } Please let me know why gcc is complaining. Is this not a standard of way of intializing structure fields? 问题是int * pi;，它是指针，你必须初始化它 使用之前！the problem is the "int *pi;",it''s a pointer ,you must intializing itbefore use it ! va ****** @ rediffmail.com 写道：大家好，以下程序是使用带有-W的gcc编译的。选项。 GCC发出以下警告信息 initStructElem.c：在函数`main''中： initStructElem.c：20：警告：缺少初始化程序 initStructElem。 c：20：警告:(接近初始化为'str1.f''） 这是程序 [snip] 5 typedef struct 6 { 7 int i1; 8 float f1; 9} str_1t; 10 11 typedef struct 12 { 13 int i; 14 float f; 15 char c; 16 int * pi; 17 str_1t s2; 18} str_t; 19 20 str_t str1 = {0}; [snip] 请告诉我为什么gcc在抱怨。 因为你已经在supercalifragiliantant模式下调用了它。 它希望你为所有结构提供显式初始化器 成员： str_t str1 = {0,0,0,0,0,0}; （即：str1.i，str1.f，str1.c， str1.pi，str1.s2.i1，str1.s2.f1）。 在编译器文档中查看`-W'选项的作用。 是这不是初始化结构字段的标准方法吗？ Hi all, The following program is compiled using gcc with "-W" option. GCC is giving the following warning message initStructElem.c: In function `main'': initStructElem.c:20: warning: missing initializer initStructElem.c:20: warning: (near initialization for `str1.f'') Here is the program[snip] 5 typedef struct 6 { 7 int i1; 8 float f1; 9 }str_1t; 10 11 typedef struct 12 { 13 int i; 14 float f; 15 char c; 16 int *pi; 17 str_1t s2; 18 }str_t; 19 20 str_t str1={0};[snip] Please let me know why gcc is complaining.Because you''ve invoked it in supercalifragilipedantic mode.It wants you to give explicit initializers for all structmembers:str_t str1={0,0,0,0,0,0};(ie.: str1.i, str1.f, str1.c, str1.pi, str1.s2.i1, str1.s2.f1).Have a look in the compiler docs what `-W'' option does. Is this not a standard of way of intializing structure fields? str_t str1 = {0}; 完全是标准和定义。 [OT]也许你想要`-Wall -pedantic''选项而不是`-W''。 - Stan Tobias mailx`echo si***@FamOuS.BedBuG.pAlS.INVA LID | sed s / [[：upper：]] // g`str_t str1={0};is perfectly stardard and defined.[OT] Perhaps you want `-Wall -pedantic'' options instead of `-W''.--Stan Tobiasmailx `echo si***@FamOuS.BedBuG.pAlS.INVALID | sed s/[[:upper:]]//g`感谢Tobias的回复。Thanks for the reply Tobias.也许你想要`-Wall -pedantic''选项而不是'-W''。Perhaps you want `-Wall -pedantic'' options instead of `-W''. 我必须使用-W选项进行编译，因为这是其中一个来自我的客户的要求。还有其他方法可以将所有大型结构的b $ b $字段初始化为0吗？I have to compile using -W option because this is one of therequirement from my client. Is there other way of intializing all thefields of big structures to 0? 这篇关于将struct fileds初始化为零的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！