About MySQL API Run Errors

Asked 2 months ago, Updated 2 months ago, 2 views

When I run the source code below in Dev C++, I get the following error:
How do I resolve this error message?

2711 C:\Users\patch\Documents\main.cpp [Error] cannot convert 'char**(MYSQL_RES*) {aka char**(st_mysql_res*)}' to 'MYSQL_ROW {aka char**}' in assignment
28 C:\Users\patch\Documents\Makefile.win recipe for target'main.o'failed

Enter your code here

#include<stdio.h>
# include <stdlib.h>
# include <string.h>
# include <C:\Program Files\MySQL\MySQL Server 5.7\include/mysql.h>

int main()
// intres(const char*s)
{
  MYSQL*m;
  MYSQL_RES*r;
  MYSQL_ROWw;
  MYSQL_STMT*s;
  MYSQL_BIND par[2];
  MYSQL_BINDres[2];
  charsd[4][60];
  unsigned long sdl[4];
  my_boolnl[4];
  char sql1[] = "SELECT user, host FROM mysql.user WHERE host LIKE '%localhost%'";
  charsql2[] = "SELECT user, host FROM mysql.user WHERE host LIKE?";

  mysql_real_connect(m, "localhost", "root", "", "test", 0, NULL, 0);

  puts("Regular Execution");
  mysql_real_query(m,sql1,strlen(sql1));

  r=mysql_store_result(m);
  while(w=mysql_fetch_row)
  {
    printf("%[email protected]%s\n", w[0], w[1]);
  }

  puts("Prepared Statement");
  mysql_stmt_prepare(s,sql2,strlen(sql2));
  // parameter
  par[0].buffer_type = MYSQL_TYPE_STRING;
  par[0].buffer=sd[0];
  par[0].is_null = 0;
  par[0].length=&sdl[0];
  mysql_stmt_bind_param(s,par);

  strncpy(sd[0], "%localhost%", 60);
  sdl[0] = strlen(sd[0]);
  mysql_stmt_execute(s);
  res[0].buffer_type = MYSQL_TYPE_STRING;
  res[0].buffer=sd[1];
  res[0].buffer_length = 60;
  res[0].is_null=&nl[1];
  res[0].length=&sdl[1];
  res[1].buffer_type = MYSQL_TYPE_STRING;
  res[1].buffer=sd[2];
  res[1].buffer_length = 60;
  res[1].is_null=&nl[2];
  res[1].length=&sdl[2];
  mysql_stmt_bind_result(s,res);

  while(w=mysql_fetch_row(r))
  {
    printf("%[email protected]%s\n", sd[1], sd[2]);
  }

  mysql_stmt_free_result(s);
  mysql_stmt_close(s);
  mysql_close(m);
}

mysql c api

2022-09-30 11:56

1 Answers

in the program
while(w=mysql_fetch_row)

The part of is

while(w=mysql_fetch_row(r))

I think it is.


2022-09-30 11:56

If you have any answers or tips


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