已知C源程序如下：
#include＜stdio.h＞
#include＜string.h＞
void reverse(char s[])
int C, i, J;
for(i=0, j=strlen(s)-1; i＜j; i++, j++)
c=s[i];
s[i]=s[j];
s[j]=c;


void getHex(int number, char s[])
int I;
i=0;
while(number＞0)
if(number%16＜10)
s[i++]=number%16+’0’;
else
switch(number%16)
case 10: s[i++]=’A’; break;
case 11: s[i++]=’B’; break;
case 12: s[i++]=’C’; break;
case 13: s[i++]=’D’; break;
case 14: s[i++]=’E’; break;
case 15: s[i++]=;F’; break;
default: printf("Error"); break;

number/=16;

s[i]=’\0’;
reverse(S);

int main()
unsigned int nmnber;
int i=0;
char s[50];
printf("%s", "please input number: \n");
scanf("%d", &number);
getHex(number, s);
i=0;
while(s[i])
printf("%c", s[i++]);
return 0;

画出程序中所有函数的控制流程图；