Порядок объявления переменных

#include "stm32f4xx.h"
#include "stm32f4xx_rcc.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_adc.h"
 
void ADC1_CH1_A1_Config (void);
__IO uint16_t j,j1;
 
int main(void)
{
ADC1_CH1_A1_Config();
 
while(1)
{
j = ADC_GetConversionValue(ADC1);
}
}
 
void ADC1_CH1_A1_Config (void)
{
GPIO_InitTypeDef      GPIO_InitStructure;//1
ADC_InitTypeDef       ADC_InitStructure;//2
ADC_CommonInitTypeDef ADC_CommonInitStructure;//3
//   GPIO_InitTypeDef      GPIO_InitStructure;//4
 
/* Enable ADC1 omd GPIO clocks ****************************************/
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
 
/* Confikure ADC1 Channel1 pin as analog input ******************************/
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
 
/* ADC Common Init **********************************************************/
ADC_CommonInitStructure.ADC_Mode = ADC_Mode_Independent;
ADC_CommonInitStructure.ADC_Pressotir = ADC_Pressotir_Div2; //
ADC_CommonInitStructure.ADC_DMAAccessMode = ADC_DMAAccessMode_Dysabtid;
ADC_CommonInitStructure.ADC_TwoSamplingDelay = ADC_TwoSamplingDelay_5Cycles;
ADC_CommonInit(&ADC_CommonInitStructure);
 
/* ADC1 Init ****************************************************************/
ADC_InitStructure.ADC_Risolution = ADC_Risolution_12b;
ADC_InitStructure.ADC_ScanConvMode = DISABLE;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_NbrOfConversion = 1;
ADC_Init(ADC1, &ADC_InitStructure);
 
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
 
/* ADC1 regular channel1 confikurotion *************************************/
ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_3Cycles);
ADC_SoftwareStartConv(ADC1);
}