简单C语言编程问题!!急!!

2024-12-11 05:38:01
推荐回答(5个)
回答1:

#include
#include
#include
#define MAXNUM 10000
int function_1 (char *);
void function_2 (char *);
void function_3 (char *);
int main(int argc, char *argv[])
{
char descrip[MAXNUM];
double price;
FILE *inFile;
int count=0;
inFile=fopen("test.txt","r"); //直接将文件放在工程目录下就行
if (inFile==NULL)
{
printf("\nFailed to open the file.\n");
exit(1);
}
while (fgets(descrip,MAXNUM,inFile) !=NULL) //这是从文件中读取字符串,而你题目要求要写到test.txt
{
printf("%s ",descrip);
}
fclose(inFile);
count=function_1(descrip);
printf("\n字符串长度:%d\n",count);
function_2(descrip);
printf("转换后的字符串:%s\n",descrip);
function_3(descrip);
printf("逆序输出: %s\n",descrip);
FILE *fp;
if((fp=fopen("testoutput.txt","w+"))==NULL)
{
printf("can't open the file!");
exit(0);
}
fputs(descrip,fp);
fclose(fp);
printf("已经输出到文件!\n");
return 0;
}
int function_1 (char *descrip) //假设你这个是统计的函数
{
return strlen(descrip);
}
void function_2 (char *descrip) //假设你这个是小写变大写的函数
{
int i=0;
for(i=0;i{
if(descrip[i]>='a'&&descrip[i]<='z')
descrip[i]=descrip[i]-32;
}
}
void function_3 (char *descrip) //假设你这个是逆序输出的函数
{
int i=0;
int temp=0;
for(i=0;i{
temp=descrip[i];
descrip[i]=descrip[strlen(descrip)-i-1];
descrip[strlen(descrip)-i-1]=temp;
}
}

回答2:

/*
Some are born great, some achieve greatness,and some have greatness thrust upon them.
.MEHT NOPU TSURHT SSENTAERG EVAH EMOS DNA,SSENTAERG EVEIHCA EMOS ,TAERG NROB ERA EMOS
85
Press any key to continue
*/
#include
#include
#define MAXNUM 10000
int function_1 (char *);
void function_2 (char *);
void function_3 (char *);

int main(int argc, char *argv[]) {
char descrip[MAXNUM];
FILE *inFile;
int count = 0;
inFile = fopen("F:\\VC\\malvolio.txt","r");
if(inFile == NULL) {
printf("\nFailed to open the file.\n");
exit(1);
}
while(fgets(descrip,MAXNUM,inFile) != NULL) {
printf("%s\n",descrip);
}
count = function_1(descrip);
function_2(descrip);
function_3(descrip);
printf("%d\n",count);
fclose(inFile);
return 0;
}

int function_1(char *descrip) { // 返回串长度 int len;
char *p = descrip;
for(len = 0; *p; len++,p++);
return len;
}

void function_2 (char *descrip) { // 将小写字母转换为大写 int i;
char *p = descrip;
for(i = 0; *p; ++i,++p)
if(*p >= 'a' && *p <= 'z')
*p -= 32;
}

void function_3(char *descrip) { // 倒叙输出串 descrip
int i,len = function_1(descrip);
char *p = descrip;
for(i = len - 1; i >= 0; --i)
printf("%c",p[i]);
printf("\n");
}

回答3:

nFile=fopen("test.txt","r");   
if (inFile==NULL) 
{
printf("\nFailed to open the file.\n");
exit(1);
}
while (fgets(descrip,MAXNUM,inFile) !=NULL)    
{
printf("%s ",descrip);
}
fclose(inFile);
count=function_1(descrip);
printf("\n字符串长度:%d\n",count);
function_2(descrip);
printf("转换后的字符串:%s\n",descrip);
function_3(descrip);
print" %s\n",descrip
FILE *fp;
if((fp=fopen("testoutput.txt","w+"))==NULL)
{
printf("can't open the file!");
exit(0);
}
fputs(descrip,fp);
fclose(fp);
printf
return 0;
}
int function_1 (char *descrip)  
{
return strlen(descrip);
}
void function_2 (char *descrip)   
{
pt++

int function_1(char *descrip) {

 

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回答4:

两个问题:
1.
int function_1 (char *descrip)
{
int i=0;
char *pt;
pt=descrip;
while (pt!=NULL)
{
if(*pt>=' '&&*pt<='z')
i++; //这里少了对pt指针的操作,应该加上pt++;
}
return (i);
}

2.
没有看到你往文件中写数据的操作。

回答5:

int function_1 这个函数while死循环了,你的指针没有做移动

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