C语言读取文件内容统计代码

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define INSERT 1
#define QUERY  2
#define UPDATE 3
#define DELETE 4
#define LIST   5
#define QUIT   0

FILE *fp;

typedef struct
{
char name[100];		//students' name
char addr[100];		//students' address
char phone[100];	//students' telephone
char workfor[100];	//work unit
} TX;

TX txl[100];	// An array of alumni record, Up to one hundred students
int last = 0;	//The current number of alumni

void show_menu();
void do_choice(int);
int get_choice();
void do_quit();
void do_insert();
void do_update();
void do_query();
void do_delete();
void do_list_all();

void init();

int main(int argc, const char *argv[])
{
int choice;

init();
while (1)
{
//1.display the main menu
show_menu();
//2.retrieve the user opition
choice = get_choice();
//3.According to the function of the corresponding choice of implementation
do_choice(choice);
//Sleep 5 sec, let the user see clearly
sleep(3);
//	system("pause>nul");
}
return 0;
}

/* Increase initial classmates information*/

void init()
{
int i = 0;

if ((fp = fopen("tx1.txt", "rb")) == NULL)
{
//printf("can't open alumni information tx1.txt, please check on !\n");
//exit(0);
last = 0;
}

else
{
while (!feof(fp))
{
if (fread(&txl[i], sizeof(TX), 1, fp) == 1)
{
//printf("read the first %d student\n", i);
//sleep(5);
i++;
}
}
last = i;
}

fclose(fp);
}

void save()
{
int i = 0;

if ((fp = fopen("tx1.txt", "wb")) == NULL)
{
//printf("can't open alumni information tx1.txt, please check on !\n");
//exit(0);
}

while (i < last)
{
fwrite(&txl[i], sizeof(TX), 1, fp);
//printf("save the first %d student\n", i);
//sleep(5);
i++;
}

fclose(fp);
}

void show_menu()
{
system("clear");
printf("====Alumnni management information system\n");
printf("\t1. Increase students information\n");
printf("\t2. Find students information\n");
printf("\t3. Modify students information\n");
printf("\t4. Delete students information\n");
printf("\t5. List all students information\n");
printf("\t0. Quit system\n");
printf("=============================================\n");
printf("Please input your choice(0~5):\n");
}

void do_quit()
{
printf("\n Welcome to use this system again, goodbye!\n");
exit(0);
}

void do_insert()
{
printf("deal with increseing......\n");
printf("name:");
scanf("%s", &txl[last].name);
printf("address:");
scanf("%s", &txl[last].addr);
printf("telephone:");
scanf("%s", &txl[last].phone);
printf("Uint:");
scanf("%s", &txl[last].workfor);
printf("Increase student success\n");
last++; // increase a student success , increased 1.
save();
}

void do_update()
{
char tname[100];	 //Temporary storage input name.
int i;
int find = 0; 		 //Whether the student find.

printf("deal with modifying......\n");
printf("Please input to change the name of the students:");
scanf("%s", &tname);

for (i = 0; i < last && !find; i++)
{
if (!strcmp(tname, txl[i].name))
{
find = 1;
printf("You find classmate information below:\n");
printf("name:%s\t", txl[i].name);
printf("address:%s\t", txl[i].addr);
printf("telephone:%s\t", txl[i].phone);
printf("work unit:%s\t", txl[i].workfor);

printf("\n Please modify:\n");
printf("name:");
scanf("%s", &txl[i].name);
printf("address:");
scanf("%s", &txl[i].addr);
printf("telephone:");
scanf("%s", &txl[i].phone);
printf("Uint:");
scanf("%s", &txl[i].workfor);

}

}

if (!find)
{
printf("I'm sorry, name for %s classmates haven't login in the alumni\n", tname);
}

else
{
printf("Name for %s classmates information has been modified successfully\n", tname);
save();
}
}

void do_list_all()
{
int i;

printf("The classmate alumni have %d student information:\n", last);

for (i = 0; i < last; i++)
{
printf("===============================================================\n");
printf("name:%s\t", txl[i].name);
printf("address:%s\t", txl[i].addr);
printf("telephone:%s\t", txl[i].phone);
printf("work unit:%s\t\n", txl[i].workfor);

}
printf("===============================================================\n");
}

void do_query()
{
char tname[100];	 //Temporary storage input name.
int i;
int find = 0; 		 //Whether the student find.

printf("deal with querying......\n");
printf("Please input to change the name of the students:");
scanf("%s", &tname);

for (i = 0; i < last && !find; i++)
{
if (!strcmp(tname, txl[i].name))
{
find = 1;
printf("You find classmate information below:\n");
printf("name:%s\t", txl[i].name);
printf("address:%s\t", txl[i].addr);
printf("telephone:%s\t", txl[i].phone);
printf("work unit:%s\t\n", txl[i].workfor);
}

}

if (!find)
{
printf("I'm sorry, name for %s classmates haven't login in the alumni\n", tname);
}
}

void do_delete()
{
char tname[100];	 //Temporary storage to delete students' name.
int i;
int find = 0; 		 //Whether the student find.
int index; 		 //Record to be deleted in students of the array index

printf("deal with deleteing......\n");
printf("Please input to be deleted the name of the students:");
scanf("%s", &tname);

for (i = 0; i < last && !find; i++)
{
if (!strcmp(tname, txl[i].name))
{
find = 1;
index = i; 	//Storage to delete classmate subcript position
break;
}

}

if (!find)
{
printf("I'm sorry, name for %s classmates haven't login in the alumni\n", tname);
}
else
{
for (i = index; i <= last; i++)
{
strcpy(txl[i].name, txl[i+1].name);
strcpy(txl[i].addr, txl[i+1].addr);
strcpy(txl[i].phone, txl[i+1].phone);
strcpy(txl[i].workfor, txl[i+1].workfor);
}
last--;
printf("Name for %s classmates information has been deleted successfully\n", tname);
save();
}
}

int get_choice()
{
int choice;

scanf("%d", &choice);

return choice;
}

void do_choice(int choice)
{
printf("is in the process of the first %d a choice \n", choice);

switch (choice)
{
case INSERT :
do_insert();
break;
case QUERY:
do_query();
break;
case UPDATE:
do_update();
break;
case DELETE:
do_delete();
break;
case LIST:
do_list_all();
break;
case QUIT:
do_quit();
break;
default:
break;
}
}

#include <stdio.h>
#include <stdlib.h>

int main ( int argc, char * argv[] )
{
int ch ;
FILE * fp ;
long count = 0 ;

//检查argc是否为2
if( argc != 2 )
{
printf(" Usage: %s Filename\n", argv[0]) ;
exit(1) ;
}

//读取字符串(文件名)，如果为NULL，则提示输出错误信息。
if( ( fp = fopen( argv[1], "r" ) ) == NULL )
{
printf("Can't open %s\n",argv[1]) ;
exit(2) ;
}

//如果不为NULL，一直读取到文件结尾，并输出读取到的内容。
while( ( ch = getc(fp) ) != EOF )
{
putc(ch,stdout) ;
count++ ;
}

//结束
fclose(fp) ;

//输出总信息
printf("File %s has %ld characters\n", argv[1], count);

return 0 ;
}