C编程[错误]预期声明或输入结束时的语句

问题描述:

我有以下代码。但是,当我尝试编译它时,我会在输入错误结束时得到预期的声明或声明。 你能告诉我为什么我得到这个错误?C编程[错误]预期声明或输入结束时的语句

/* File steelclass.c 

This program reads a yield tensile strength from the file steelclassin.txt, calls the 
function classfunc to determine the corresponding class and then the main program writes 
the strength and corresponding class to a file steelclassout.txt. This continues until the 
end of the input file is reached. 

*/ 

#include<stdio.h.> 

char classfunc(float s); 

int main (void) 
{ 



    float str; 
    char cls; 

    FILE * fin = fopen("steelclassin.txt", "r"); 
    FILE * fout = fopen("steelclassout.txt", "w"); 

    fprintf(fout, "Tensile strength Class\n"); 
    fprintf(fout, "------------------------\n"); 

    while (fscanf(fin, "%f", &str)!= EOF){ 
    cls = classfunc(str); 
    fprintf(fout, "%f     %c\n", str, cls); 


    fclose(fout); 
    system("steelclassout.txt"); 
    return 0; 

} 

char classfunc(float s) 
{ 



    char myClass; 

    if(s >= 1000.0){ 
     myClass = 'A'; 
    }else if(s >= 800.0){ 
     myClass = 'B'; 
    }else if (s >= 600.0){ 
     myClass = 'C'; 
    }else if (s >= 400.0){ 
     myClass = 'D'; 
    }else{ 
     myClass = 'E'; 
    } 

    return myClass; 

} 
+0

如果这正是你试图编译代码,您必须在同时范围末尾缺少一个右括号。另外,你应该在使用之前检查'fin'和'fout'。请注意,如果'fscanf'无法读取浮点数,则返回0. –

+0

使用代码格式化程序/自动注册器可以轻松避免这样的问题。如果你的编辑器/ IDE无法做到(即使有一些插件),请使用其他工具/编辑器来完成它,并考虑切换。 – hyde

+2

'#include '看起来不正确。 – wildplasser

/* Where is the closing } for this opening bracket?!? 
            | 
            V 
    */ 
while (fscanf(fin, "%f", &str)!= EOF){ 
cls = classfunc(str); 
fprintf(fout, "%f     %c\n", str, cls);