C语言程序：输入一个2/8/10/16进制数，将其转换到2/8/10/16进制数

C语言程序：输入一个2/8/10/16进制数，将其转换到2/8/10/16进制数

#include <stdio.h>

#define MAXCHAR 101

int char_to_num(char ch);

char num_to_char(int num);

long source_to_decimal(char temp[],int source);

int decimal_to_object(char temp[],long decimal_num,int object);

void output(char temp[],int length);

int main(void)

{

int source;

int object;

int length;

long decimal_num;

char temp[MAXCHAR];
int flag=1;

printf("你好\n");

while(flag)

{

printf("zhuan huan qian de shu shi：\n");

scanf("%s",temp);

printf("zhuan huan qian de shu zhi：\n");

scanf("%d",&source);

printf("zhuan huan hou de shu zhi：\n");

scanf("%d",&object);

printf("zhuan huan hou de shu shi：\n");

decimal_num=source_to_decimal(temp,source);

length=decimal_to_object(temp,decimal_num,object);

output(temp,length);

printf("ji xu,shu ru 1,bu ji xu shu ru 0：\n");

scanf("%d",&flag);

}

printf("bye!\n");

return 0;

}

int char_to_num(char ch)

{

if(ch>='0'&&ch<='9')

return ch-'0';

else

return ch-'A'+10;

}

char num_to_char(int num)

{

if(num>=0&&num<=9)

return (char)('0'+num-0);

else

return (char)('A'+num-10);

}

long source_to_decimal(char temp[],int source)

{

long decimal_num=0;

int length;

int i;

for(i=0;temp[i]!='\0';i++)

;

length=i;

for(i=0;i<=length-1;i++)

decimal_num=(decimal_num*source)+char_to_num(temp[i]);

return decimal_num;

}

int decimal_to_object(char temp[],long decimal_num,int object)

{

int i=0;

while(decimal_num)

{

temp[i]=num_to_char(decimal_num%object);

decimal_num=decimal_num/object;

i++;

}

temp[i]='\0';

return i;

}

void output(char temp[],int length)

{

int i;

for(i=length-1;i>=0;i--)

printf("%c",temp[i]);

printf("\n");