25 lines
400 B
C
25 lines
400 B
C
#include <stdio.h>
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int main(void) {
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int n;
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do {
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printf("Input positive integer: ");
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scanf("%d", &n);
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if (n <= 0) {
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puts("\aPlease input non-negative, non-zero integer.");
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}
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} while (n <= 0);
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int d = 0;
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int x = n;
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while (x > 0) {
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x /= 10;
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d++;
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}
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printf("%d is %d digit number.\n", n, d);
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return 0;
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}
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