A Template Class In C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
struct templateStructure
{
        signed int mcsi_row;
        signed int mcsi_col;
        signed int mcsi_type;
        char *mcpc_ptr;
        //void (*init)(templateStructure *,const char*,const int,const int);
        void (*mcfn_get)(struct templateStructure *,const int ,const int,void *);
        void (*mcfn_set)(struct templateStructure *,const int,const int,const void *);
};
typedef struct templateStructure template_t;
typedef template_t* template_p;

void fnG_set(template_p StL_obj,const int iL_row,const int iL_col,const void *val)
{
        char *pvL_tmpPtr;
        pvL_tmpPtr =StL_obj->mcpc_ptr + (((StL_obj->mcsi_col*StL_obj->mcsi_type)*iL_row)+(iL_col*StL_obj->mcsi_type));
        memcpy(pvL_tmpPtr,val,StL_obj->mcsi_type);
}

void fnG_get(template_p StL_obj,const int iL_row,const int iL_col,void *val)
{
        char *pvL_tmpPtr;
        pvL_tmpPtr =StL_obj->mcpc_ptr + ((((StL_obj->mcsi_col)*(StL_obj->mcsi_type))*(iL_row))+((iL_col)*(StL_obj->mcsi_type)));
        memcpy(val,pvL_tmpPtr,StL_obj->mcsi_type);
}

int fnG_initTemplate(template_p StL_obj,const char *pcL_type,const int iL_row,const int iL_col)
{
        StL_obj->mcsi_row=iL_row;
        StL_obj->mcsi_col=iL_col;
        if(strcmp(pcL_type,"int")==0)
        {
                StL_obj->mcsi_type=sizeof(int);
                StL_obj->mcpc_ptr=(char *)malloc((sizeof(int)*iL_row)*iL_col);
        }
        else if(strcmp(pcL_type,"char")==0)
        {
                StL_obj->mcsi_type=sizeof(char);
                StL_obj->mcpc_ptr=(char *)malloc((sizeof(char)*iL_row)*iL_col);
        }
        else if(strcmp(pcL_type,"float")==0)
        {
                StL_obj->mcsi_type=sizeof(float);
                StL_obj->mcpc_ptr=(char *)malloc((sizeof(float)*iL_row)*iL_col);
        }
        StL_obj->mcfn_get=fnG_get;
        StL_obj->mcfn_set=fnG_set;
}

int main(int argc,char* argv[],char* envp[])
{
        char val='a';
        char val1='z';
//      int val=1000;
//      int val1=999;
        template_t myObj;
        printf("val=%c and val1=%c\n",val,val1);
        //printf("val=%d and val1=%d\n",val,val1);
        fnG_initTemplate(&myObj,"char",4,3);//use to define different type at run time 
        //fnG_initTemplate(&myObj,"int",4,3);//use to define different type at run time 
        myObj.mcfn_set(&myObj,0,3,&val1);
        printf("val=%c and val1=%c \n",val,val1);
        myObj.mcfn_get(&myObj,0,3,&val);
        printf("val=%c and val1=%c \n",val,val1);
        //printf("val=%d and val1=%d\n",val,val1);
        return 0;
}