C读取文件并显示

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

int main(void)
{
    char buffer[4096] = {0};

    char * data = getenv("QUERY_STRING");
    //data="a=10"

    FILE * f = fopen("/home/donghuayu/untitled/someThing.txt","r");
    if (f) {
        printf("%s\n\r\n","Content-Type:text/html;charset-iso-8859-1");
        printf("<TITLE>Multipliaction results ABC</TITLE>\n");
        printf("<H3>Multiplication Result</H3>\n");
        printf("<body>\n");
        if (data) {
            printf("%s\n", data);
        }
        printf("<b>\n");

        while (!feof(f)) {
            data = fgets(buffer, sizeof(buffer)-1, f);
            if (data) {
                printf("%s", data);
            }
        }
        printf("</body>\n");
        fclose(f);
    }

    fflush(stdout);

    return 0;
}
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