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46 lines
1.0 KiB
46 lines
1.0 KiB
8 months ago
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#include <stdio.h>
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#include <string.h>
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#include <limits.h>
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void itoa(int n, char s[]);
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void reverse(char s[]);
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int main(void) {
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char buffer[20];
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int i = 35;
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printf("Number: %d\n", i);
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itoa(i, buffer);
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printf("Buffer : %s\n", buffer);
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printf("INT_MIN: %d\n", INT_MIN);
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itoa(INT_MIN, buffer);
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printf("Buffer : %s\n", buffer);
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return 0;
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}
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/* itoa: преобразование n в строку s */
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void itoa(int n, char s[]) {
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int i, sign;
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sign = n; /* сохраняем знак */
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i = 0;
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do { /* генерируем цифры в обратном порядке */
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s[i++] = abs(n % 10) + '0'; /* следующая цифра */
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} while ( n /= 10 ); /* исключить ее */
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if (sign < 0)
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s[i++] = '-';
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s[i] = '\0';
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reverse(s);
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}
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void reverse(char s[]) {
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int c, i, j;
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for ( i = 0, j = strlen(s)-1; i < j; i++, j--) {
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c = s[i];
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s[i] = s[j];
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s[j] = c;
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}
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}
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