C程序通過mysql pull

Question

我有這段代碼可以找到一些輸入值的平均值和標準偏差。但這是一個靜態程序。我想通過一個MySQL數據庫來使用它。你能幫我嗎？

 
int main[] 
[ 
/* 2-dimensional array is used to store the height,lenght and the width attributes of the nose. indian 
array represents 
the indian data and the china array represents the chinese data */ 
/* Mean variable represents the mean values. The subscripts are used to identify indian and chinese 
attributes */ 
float indian[MAX][3],china[MAX] 
[3],mean_ih=0,mean_il=0,mean_iw=0,mean_ch=0,mean_cl=0,mean_cw=0; 
/* Following float variables store the standard deviation values */ 
float sd_ih=0,sd_il=0,sd_iw=0,sd_ch=0,sd_cl=0,sd_cw=0; 
int i,j; 
float test_h,test_l,test_w; 

/*填充印度DATABASE */

 
indian[i][j]=random[]/DIV; 

/填充中文數據庫/

 
china[i][j]=random[]/DIS; 

尋找印度和中國數據

的平均

 
mean_ih+=indian[i][0]; 
mean_il+=indian[i][1]; 
mean_iw+=indian[i][2]; 
mean_ch+=china[i][0]; 
mean_cl+=china[i][1]; 
mean_cw+=china[i][2]; 
mean_ih=mean_ih/MAX; mean_il=mean_il/MAX; mean_iw=mean_iw/MAX; 
mean_ch=mean_ch/MAX; mean_cl=mean_cl/MAX; mean_cw=mean_cw/MAX; 

要查找條目

 
sd_ih+=pow[[indian[i][0]-mean_ih],2]; 
sd_il+=pow[[indian[i][1]-mean_il],2]; 
sd_iw+=pow[[indian[i][2]-mean_iw],2]; 
sd_ch+=pow[[china[i][0]-mean_ch],2]; 
sd_cl+=pow[[china[i][1]-mean_cl],2]; 
sd_cw+=pow[[china[i][2]-mean_cw],2]; 

sd_ih=sqrt[sd_ih/MAX]; sd_il=sqrt[sd_il/MAX]; sd_iw=sqrt[sd_iw/MAX]; 
sd_ch=sqrt[sd_ch/MAX]; sd_cl=sqrt[sd_cl/MAX]; sd_cw=sqrt[sd_cw/MAX]; 

提示用戶輸入數據的標準偏差，以驗證

的printf [」 \ n ================ ============================================ \ n「]; printf [「\ n輸入高度\ n」]; scanf [「％f」，＆test_h]; printf [「\ n ============================================ ================ \ n「]; printf [「\ n輸入長度\ n」]; scanf [「％f」，＆test_l]; printf [「\ n ============================================ ================ \ n「]; printf [「\ n輸入寬度\ n」]; scanf [「％f」，＆test_w]; printf [「\ n ============================================ ================ \ n「]; if [[abs [mean_ih-test_h]

Answer 1

您需要查看mySQL C API文檔here瞭解如何通過C程序連接到MySQL數據庫。

對於一個教程，你也可以看看this。