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@ -67,17 +67,33 @@ unsigned int power(unsigned int base, unsigned int exponent){ |
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} |
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} |
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} |
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} |
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bool everyCharacterIsDigit(char *string) |
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{ |
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bool onlyDigits = true; |
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for(int i=0;*(string+i)!='\0';++i){ |
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if(*(string+i)<'0'||*(string+i)>'9'){ |
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onlyDigits = false; |
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break; |
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} |
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} |
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return onlyDigits; |
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} |
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unsigned int toUnsignedInteger(char *ID) |
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unsigned int toUnsignedInteger(char *ID) |
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{ |
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{ |
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if(everyCharacterIsDigit(ID)){ |
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unsigned int result = 0; |
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unsigned int result = 0; |
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int IDLength = strlen(ID); |
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int IDLength = strlen(ID); |
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for(int i=0, j = IDLength - 1;i<IDLength;++i,--j){ |
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for(int i=0, j = IDLength - 1;i<IDLength;++i,--j){ |
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result += (*(ID+j) - '0') * power(10,i); |
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result += (*(ID+j) - '0') * power(10,i); |
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} |
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} |
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return result; |
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return result; |
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} else { |
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return 0; |
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} |
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} |
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} |
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char *generateCheckString(unsigned int customerID, char *customerPassword) |
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char *generateCheckString(unsigned int customerID, char *customerPassword) |
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{ |
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{ |
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char *IDString = to_string(customerID); |
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char *IDString = to_string(customerID); |
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