Where there is a problem, the output will not stop the

CodePudding user response:

 
# include & lt; stdio.h> 
# include & lt; Stdlib. H> 
# include & lt; String. H> 
Struct sp 
{
Int xuehao; 
/* 
A former 
Char xingroing [4]. 
Char xingbie [1]. 
Char kecheng [7]. 
Instead of */
Char xingroing [9]. 
Char xingbie [3]. 
Char kecheng [15]. 
//reasons: Chinese characters of two bytes (char), and output string \ 0 at the end, such as "male" includes three bytes 

Int chengji; 
}; 

Int main (uoid) 
{
int j; 
Double jigelv; 
Int jige=O; 
Int count=O; 
Int flag=O; 
Char chazhao [15].//former char chazhao [7]; 
The struct student sp; 
The FILE * fp. 
Printf (" please input to compute the pass rate of course name: "); 
The scanf (" % s ", chazhao); 
Printf (" \ n the calculation results for: \ n "); 
Fp=fopen (" XSCJ. TXT ", "r"); I 
If (fp==NULL) 
{
Printf (" can not open the file! \n"); 
exit(1); 
} 
//note: the following statements is easy to spill 
J=fscanf (fp, "% s % d % d % s % s", & amp; Student xuehao, student xingming, student. Xingbie, student. Kecheng, & amp; Student. Chengji); 
While (j==5) {
flag=1; 
If (STRCMP (student kecheng, chazhao)==O) 
{
//the following statement error 
//printf (" % d % s % c % s % d ", & amp; Student xuehao, student xingming, student. Xingbie, student. Kecheng, & amp; Student. Chengji); 
//to 
Printf (" % d % d % s % c % s ",/* & amp; */student xuehao, student xingming, student. Xingbie, student. Kecheng,/* & amp; */student. Chengji); 
//reasons: not directly with data array using printf don't address, 
flag=1; 
J=fscanf (fp, "% s % d % d % s % s", & amp; Student xuehao, student xingming, student. Xingbie, student. Kecheng, & amp; Student. Chengji); 

//add the following statement 
count++; 
If (student. Chengji & gt;=60) jige++;//to (including) 60 as to pass the 
//reason: count when using the 
} 
} 
If (flag==O) 
{
Printf (" file no name for \ "% s " course \ n ", chazhao); 
} 
If (flag==1) 
{
//change my statement 
//jigelv=jige/count; 
//printf (" course \ "% s " there are % d candidate, including pass % d, the pass rate for % f ", chazhao, count, jige, jigelv); 
Jigelv=(double) jige/count; 
Printf (" course \ "% s \ % d person to learn, including pass % d, the pass rate for % lf"/* front instead lf */f, chazhao, count, jige, jigelv); 
//reasons: jigelv is double, and jige and count are int, need to type conversion, float with f, double with lf 
} 
The return O; 
} 

For reference, also, the building Lord, you should learn English

CodePudding user response:

Should be an array of the building Lord, speaking, reading and writing the definition, the array length is too small, need to consider '\ 0'