C語言中整形轉字符串的例子

比如這樣一個問題：輸入一個正整數，將它轉爲正整數。 可用sprintf、snprint來實現。代碼如下：

#include <stdio.h>
#include <string.h>

int a=0;
char buffer[8];

int main() {

	do {
		printf("input an unsigned int:");
		scanf("%u", &a);
	} while(a<0);

	snprintf(buffer, sizeof(buffer)+1, "%d", a);

	printf("length of buffer:%d, value is:%s\n ", strlen(buffer), buffer);

	return 0;
}