编程学习网为您整理以下代码实例，主要实现：使用填充将整数转换为字符串，希望可以帮到各位朋友。
#include <stdio.h>
#include <limits.h>
#define MAXliNE 1000
voID itoa(int n, char s[], int w);
voID reverse(char s[]);
int main(voID){
char s[MAXliNE];
int wIDth;
wIDth = 11;
itoa(INT_MIN, s, wIDth);
printf("%12d is converted to %s.\n", INT_MIN, s);
itoa(123, s, wIDth);
printf("%12d is converted to %s.\n", 123, s);
itoa(-321, s, wIDth);
printf("%12d is converted to %s.\n", -321, s);
return 0;
}
voID itoa(int n, char s[], int w){
int i = 0, sign= n, remainder, k, j;
do {
remainder = n % 10;
s[i++] = ((sign < 0) ? -remainder : remainder) + '0';
} while (n /= 10);
if (sign < 0)
s[i++] = '-';
while (i < w)
s[i++] = ' ';
s[i] = '\0';
reverse(s);
}
voID reverse(char s[]){
int tmp;
int j = 0;
for (j = 0; s[j] != '\0'; ++j)
;
--j;
for (int i = 0; i < j; ++i, --j) {
tmp = s[i];
s[i] = s[j];
s[j] = tmp;
}
}
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