[C++]Linux之读取计算机网络数据[/proc/net/dev]

#include<stdlib.h>
#include<stdio.h>#define BUFFER_SIZE 256int main(){
FILE *stream;
char buffer[BUFFER_SIZE];//缓冲区
char *line_return;//记录每次返回值（行）
int line_count = 0;//记录行数
char tmp_itemName[32];//临时存放文件中的每行的项目名称
int itemReceive;//存放每一个网卡的接受到的字节总数（单位：Byte）
int itemTransmit;//存放每一个网卡的已发送的字节总数（单位：Byte）system("cat /proc/net/dev");
printf("**************************************************************************************************************");stream = fopen("/proc/net/dev", "r");line_return = fgets (buffer, BUFFER_SIZE * sizeof(char), stream);//读取第一行
line_count++;
printf("\n[MAIN] line %d: %s\n", line_count, line_return);//输出第一行line_return = fgets (buffer, BUFFER_SIZE * sizeof(char), stream);//读取第二行
line_count++;
printf("\n[MAIN] line %d: %s\n", line_count, line_return);//输出第二行
printf("**************************************************************************************************************");while(line_return != NULL){
line_return = fgets (buffer, BUFFER_SIZE * sizeof(char), stream);
line_count++;
printf("\n[MAIN] line %d: %s", line_count, line_return);
sscanf(buffer,
"%s%d%d%d%d%d%d%d%d%d",
tmp_itemName,
&itemReceive,
&itemTransmit,
&itemTransmit,
&itemTransmit,
&itemTransmit,
&itemTransmit,
&itemTransmit,
&itemTransmit,
&itemTransmit);
printf("line %d:itemReceive: %d\n", line_count, itemReceive);
printf("line %d:itemTransmit: %d\n\n", line_count, itemTransmit);
}return 0;
}