#include<stdio.h> #include<stdlib.h> #include<string.h> void reversestr(char*source,char target[],unsigned int length); void tohex(unsigned long num,char*hexStr); int main() { char hexStr[16]; int num; printf("請(qǐng)輸入一個(gè)十進(jìn)制數(shù):\n"); scanf("%d",&num); tohex(num,hexStr); printf("轉(zhuǎn)換成的十六進(jìn)制為:%s\n",hexStr); system("pause"); } void reversestr(char*source,char target[],unsigned int length) { unsigned int i; for(i=0;i<length;i++) target[i]=source[length-1-i]; target[i]=0; } void tohex(unsigned long num,char*hexStr) { unsigned long n=num; char hextable[]="0123456789ABCDEF"; char temphex[16],hex[16]; unsigned long int i=0; while(n) { temphex[i++]=hextable[n]; n/=16; } temphex[i]=0; reversestr(temphex,hex,i); strcpy(hexStr,hex); }
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