关于结构体数组输入和输出的一个小问题。

setihomesfl 2016-05-24 02:18:08
两个小细节，困扰了四个小时。没办法正常输出。
大家帮忙看下问题在哪。
#include
struct jiegouti1
{
char name[20];
int number;
char csex[20];
int igrade;
}xuesheng[5] = { {"sd",10,"fd",45},{"sd",10,"fd",45},{"sd",10,"fd",45},{"sd",10,"fd",45},{"sd",10,"fd",45} }
;
int main()
{
int j;
for (j = 0; j < 5;j ++);
{
printf("top%d",j+1);
printf("%s", xuesheng[j].name);
printf("%d", xuesheng[j].number);
printf("%s", xuesheng[j].csex);
printf("%d", xuesheng[j].igrade);
printf("\n");
};
return 0;
}
上面的是教材提供，自己敲出来的。
下面是自己写的。
#include
#define Printfshuchu printf("%s %d %s %d",xuesheng[j].name,xuesheng[j].number,xuesheng[j].csex,xuesheng[j].igrade);
struct jiegouti1
{
char name[20];
int number;
char csex[20];
int igrade;
}xuesheng[5]
;
int main(void)
{
int i,j;
for (j = 0; j < 5; j++)；
{


scanf_s("%s", &xuesheng[j].name, 20);
scanf_s("%d", &xuesheng[j].number);
scanf_s("%s", &xuesheng[j].csex, 20);
scanf_s("%d", &xuesheng[j].igrade);

}
for (j = 0; j < 5;j ++)；
{
printf("top%d \n",j+1);
Printfshuchu(printf);
};
return 0;
}
+++++++++++++++++++++++++++++++++++++++++
最后都抽了一包烟了 才发现问题。
然后动了两下撤销问题解决。
自己疏忽大意导致四个小时的浪费和各种不解，一直需找各种代码输入错误，
却不知是自己的马虎。
发帖检讨自己，顺便算是一个给自己和坛友的一个提醒。
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赵4老师 2016-05-25
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引用 9 楼 lm_whales 的回复:
常有的事情，有时候会出现多了，少了个分号，大括号的错误 结果往往系统报错是某某头文件错误
偶遇到类似问题都是用 “每次用/*...*/注释掉不同部分再重新编译，直到定位到具体语法出错的位置。” 的方法解决的。
赵4老师 2016-05-24
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先学会跟踪代码，再学会写代码。
setihomesfl 2016-05-24
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引用 4 楼 paschen 的回复:
[quote=引用 3 楼 setihomesfl 的回复:] [quote=引用 2 楼 paschen 的回复:] 两处 for (j = 0; j < 5; j++) 这个后面都多了一个分号
是的 就是这一个疏忽导致[/quote] 如果调试时单步跟踪程序运行，我想你不应该花4小时才发现 [/quote] 因为是小程序所以就没有跟踪,也因为是简单所以就没有往这方面想.
paschen 2016-05-24
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引用 3 楼 setihomesfl 的回复:
[quote=引用 2 楼 paschen 的回复:] 两处 for (j = 0; j < 5; j++) 这个后面都多了一个分号
是的 就是这一个疏忽导致[/quote] 如果调试时单步跟踪程序运行，我想你不应该花4小时才发现
setihomesfl 2016-05-24
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引用 2 楼 paschen 的回复:
两处 for (j = 0; j < 5; j++) 这个后面都多了一个分号
是的 就是这一个疏忽导致
paschen 2016-05-24
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两处 for (j = 0; j < 5; j++) 这个后面都多了一个分号
lm_whales 2016-05-24
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常有的事情，有时候会出现多了，少了个分号，大括号的错误 结果往往系统报错是某某头文件错误
醉花阴柳 2016-05-24
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#define Printfshuchu printf("%s %d %s %d",xuesheng[j].name,xuesheng[j].number,xuesheng[j].csex,xuesheng[j].igrade);
Printfshuchu(printf);
setihomesfl 2016-05-24
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引用 6 楼 zhao4zhong1 的回复:
先学会跟踪代码，再学会写代码。
主要是没几句代码,感觉没必要用. 也没往细节那去想 以为是别的问题.太大意了.
java用JNA调用dll实例，包含各种参数调用
实例中演示了各种参数形式的DLL函数调用，如：基本数据类型、基本数据类型的指针和引用、结构体、结构体的指针和引用、函数指针和回调函数、字符串指针、输入数组、输出数组等，非常实用。
必须知道的495个C语言问题
一些常见的、需要注意的问题。对提高C语言编程有重要的作用！
The C Programming Language 第二版 英文版
The C programming Language 第二版英文版 內容列表 Table of Contents Preface.......................................................... Preface to the first edition..................................... Introduction..................................................... Chapter 1 - A Tutorial Introduction.............................. 1.1 Getting Started................................ 1.2 Variables and Arithmetic Expressions........... 1.3 The for statement.............................. 1.4 Symbolic Constants............................. 1.5 Character Input and Output..................... 1.5.1 File Copying.......................... 1.5.2 Character Counting.................... 1.5.3 Line Counting......................... 1.5.4 Word Counting......................... 1.6 Arrays......................................... 1.7 Functions...................................... 1.8 Arguments - Call by Value...................... 1.9 Character Arrays............................... 1.10 External Variables and Scope.................. Chapter 2 - Types, Operators and Expressions..................... 2.1 Variable Names................................. 2.2 Data Types and Sizes........................... 2.3 Constants...................................... 2.4 Declarations................................... 2.5 Arithmetic Operators........................... 2.6 Relational and Logical Operators............... 2.7 Type Conversions............................... 2.8 Increment and Decrement Operators.............. 2.9 Bitwise Operators.............................. 2.10 Assignment Operators and Expressions.......... 2.11 Conditional Expressions....................... 2.12 Precedence and Order of Evaluation............ Chapter 3 - Control Flow......................................... 3.1 Statements and Blocks.......................... 3.2 If-Else........................................ 3.3 Else-If........................................ 3.4 Switch......................................... 3.5 Loops - While and For.......................... 3.6 Loops - Do-While............................... 3.7 Break and Continue............................. 3.8 Goto and labels................................ Chapter 4 - Functions and Program Structure...................... 4.1 Basics of Functions............................ 4.2 Functions Returning Non-integers............... 4.3 External Variables............................. 4.4 Scope Rules.................................... 4.5 Header Files................................... 4.6 Static Variables................................ 4.7 Register Variables.............................. 4.8 Block Structure................................. 4.9 Initialization.................................. 4.10 Recursion...................................... 4.11 The C Preprocessor............................. 4.11.1 File Inclusion........................ 4.11.2 Macro Substitution.................... 4.11.3 Conditional Inclusion................. Chapter 5 - Pointers and Arrays.................................. 5.1 Pointers and Addresses......................... 5.2 Pointers and Function Arguments................ 5.3 Pointers and Arrays............................ 5.4 Address Arithmetic............................. 5.5 Character Pointers and Functions............... 5.6 Pointer Arrays; Pointers to Pointers........... 5.7 Multi-dimensional Arrays....................... 5.8 Initialization of Pointer Arrays............... 5.9 Pointers vs. Multi-dimensional Arrays.......... 5.10 Command-line Arguments........................ 5.11 Pointers to Functions......................... 5.12 Complicated Declarations...................... Chapter 6 - Structures........................................... 6.1 Basics of Structures........................... 6.2 Structures and Functions....................... 6.3 Arrays of Structures........................... 6.4 Pointers to Structures......................... 6.5 Self-referential Structures.................... 6.6 Table Lookup................................... 6.7 Typedef........................................ 6.8 Unions......................................... 6.9 Bit-fields..................................... Chapter 7 - Input and Output..................................... 7.1 Standard Input and Output....................... 7.2 Formatted Output - printf....................... 7.3 Variable-length Argument Lists.................. 7.4 Formatted Input - Scanf......................... 7.5 File Access..................................... 7.6 Error Handling - Stderr and Exit................ 7.7 Line Input and Output........................... 7.8 Miscellaneous Functions......................... 7.8.1 String Operations...................... 7.8.2 Character Class Testing and Conversion. 7.8.3 Ungetc................................. 7.8.4 Command Execution...................... 7.8.5 Storage Management..................... 7.8.6 Mathematical Functions................. 7.8.7 Random Number generation............... Chapter 8 - The UNIX System Interface............................ 8.1 File Descriptors............................... 8.2 Low Level I/O - Read and Write................. 8.3 Open, Creat, Close, Unlink..................... 8.4 Random Access - Lseek.......................... 8.5 Example - An implementation of Fopen and Getc.. 8.6 Example - Listing Directories.................. 8.7 Example - A Storage Allocator.................. Appendix A - Reference Manual.................................... A.1 Introduction................................... A.2 Lexical Conventions............................ A.2.1 Tokens................................ A.2.2 Comments.............................. A.2.3 Identifiers........................... A.2.4 Keywords.............................. A.2.5 Constants............................. A.2.6 String Literals....................... A.3 Syntax Notation................................ A.4 Meaning of Identifiers......................... A.4.1 Storage Class......................... A.4.2 Basic Types........................... A.4.3 Derived types......................... A.4.4 Type Qualifiers....................... A.5 Objects and Lvalues............................ A.6 Conversions.................................... A.6.1 Integral Promotion.................... A.6.2 Integral Conversions.................. A.6.3 Integer and Floating.................. A.6.4 Floating Types........................ A.6.5 Arithmetic Conversions................ A.6.6 Pointers and Integers................. A.6.7 Void.................................. A.6.8 Pointers to Void...................... A.7 Expressions.................................... A.7.1 Pointer Conversion.................... A.7.2 Primary Expressions................... A.7.3 Postfix Expressions................... A.7.4 Unary Operators....................... A.7.5 Casts................................. A.7.6 Multiplicative Operators.............. A.7.7 Additive Operators.................... A.7.8 Shift Operators....................... A.7.9 Relational Operators.................. A.7.10 Equality Operators................... A.7.11 Bitwise AND Operator................. A.7.12 Bitwise Exclusive OR Operator........ A.7.13 Bitwise Inclusive OR Operator........ A.7.14 Logical AND Operator................. A.7.15 Logical OR Operator.................. A.7.16 Conditional Operator................. A.7.17 Assignment Expressions............... A.7.18 Comma Operator.......................... A.7.19 Constant Expressions.................... A.8 Declarations..................................... A.8.1 Storage Class Specifiers................. A.8.2 Type Specifiers.......................... A.8.3 Structure and Union Declarations......... A.8.4 Enumerations............................. A.8.5 Declarators.............................. A.8.6 Meaning of Declarators................... A.8.7 Initialization........................... A.8.8 Type names............................... A.8.9 Typedef.................................. A.8.10 Type Equivalence........................ A.9 Statements....................................... A.9.1 Labeled Statements....................... A.9.2 Expression Statement..................... A.9.3 Compound Statement....................... A.9.4 Selection Statements..................... A.9.5 Iteration Statements..................... A.9.6 Jump statements.......................... A.10 External Declarations........................... A.10.1 Function Definitions.................... A.10.2 External Declarations................... A.11 Scope and Linkage............................... A.11.1 Lexical Scope........................... A.11.2 Linkage................................. A.12 Preprocessing................................... A.12.1 Trigraph Sequences...................... A.12.2 Line Splicing........................... A.12.3 Macro Definition and Expansion.......... A.12.4 File Inclusion.......................... A.12.5 Conditional Compilation................. A.12.6 Line Control............................ A.12.7 Error Generation........................ A.12.8 Pragmas................................. A.12.9 Null directive.......................... A.12.10 Predefined names....................... A.13 Grammar......................................... Appendix B - Standard Library.................................... B.1.1 File Operations................................ B.1.2 Formatted Output......................... B.1.3 Formatted Input.......................... B.1.4 Character Input and Output Functions..... B.1.5 Direct Input and Output Functions........ B.1.6 File Positioning Functions............... B.1.7 Error Functions.......................... B.2 Character Class Tests: ................. B.3 String Functions: ..................... B.4 Mathematical Functions: ................. B.5 Utility Functions: ....................
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