GRegex提取成绩并求均值

#include

#include

#include

/**

*

*gcc 007.c -o 007.app `pkg-config --cflags --libs glib-2.0`

*/

int split(char* line,char* pattern,gchar*** fields);

float avg(gchar** fields,guint* idx,guint size);

int main(int argc,char** argv){

    FILE* fp = fopen("./007.dat","r");

    if(fp == NULL){

        g_print("%s\n",strerror(errno));

        return -1;

    }

    char line[1024];

    int line_no = 0;

    gchar** fields;

    guint idx[5] = {1,2,3,4,5};

    while(fgets(line,1024,fp)){

        g_strstrip(line);

        split(line,"\\s+",&fields); 

        g_print("%-15s:",fields[0]);

        g_print("%f\n",avg(fields,idx,5));

    }

    fclose(fp);

    return 0;

}

int split(char* line,char* pattern,gchar*** fields){

    GRegex* regex = NULL;

    GMatchInfo* match_info = NULL;

    guint i = 0;

    regex = g_regex_new(pattern,0,0,NULL);

    *fields = g_regex_split(regex,line,0);

    g_regex_unref(regex);

}

float avg(gchar** fields,guint* idx,guint size){

    guint len = g_strv_length(fields);

    float avarage = 0.0f;

    guint i = 0;

    for(i = 0; i < size;i++){

        avarage += g_ascii_strtod(fields[idx[i]],NULL);

    }

    

    g_strfreev(fields);

    return avarage/size;

}

数据文件007.dat

ZhiXiao 87 68 88 92 88 80

LeiShi  99 80 79 88 90 90

SunXi   79 97 99 82 70 89

SiKai   78 88 99 79 90 80