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itoa: int to ascii
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/* ITOA() | |
* | |
* int to ascii | |
* | |
* Descripcion: | |
* Convierte un entero a su ascii equivalente. | |
* Retorna: | |
* un puntero a string con los caracteres numericos que componen el entero | |
* Ejemplo: | |
* buff=itoa(1024): luego en buff={'1','0','2','4','\0'} | |
* | |
*/ | |
#include<stdio.h> | |
#include<stdlib.h> | |
#include<math.h> | |
#include<unistd.h> | |
const char * itoa(int num); | |
void main(){ | |
int num, num2; | |
const char *buff; | |
while(1){ | |
num = random(); | |
printf("%d\t-\t", num); | |
buff = itoa(num); | |
printf("%s\t", buff); | |
num2 = atoi(buff); | |
num == num2? printf("---> OK!\n"): printf("---> bad!\n"); | |
usleep(100000); | |
} | |
} | |
const char * itoa(int num){ | |
static char b[10]; | |
unsigned long int i, k; | |
int j, digito; | |
k = 1; | |
while( (num/(k*10)) ) | |
k *= 10; | |
for(j=0,i=k; i>0; i/=10, j++){ | |
digito = num/i; | |
b[j] = '0' + digito; | |
num = num%i; | |
} | |
b[j]='\0'; | |
return b; | |
} |
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