30 lines
711 B
C
30 lines
711 B
C
#include <stdio.h>
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int main() {
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char idCardNo[18] = {0};
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int i = 0, sum = 0;
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int temp = 0;
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char checkSum = 0;
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int weigh[17] = {7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};
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for (i = 0; i < 18; i++) {
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idCardNo[i] = getchar();
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}
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for (i = 0; i < 17; i++) {
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temp = ((idCardNo[i] - '0')*weigh[i]) % 11;
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sum += ((idCardNo[i] - '0')*weigh[i]) % 11;
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}
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checkSum = (12 - (sum % 11)) % 11;
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if (checkSum == 10) {
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checkSum = 'X';
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}
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else {
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checkSum += '0';
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}
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if (checkSum == idCardNo[17]) {
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printf("合法\n");
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}
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else {
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printf("非法，正确校验位是%c", checkSum);
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}
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return 0;
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} |