Objective

Implement a function that reads a numeric value from a string, skipping any leading whitespace and handling an optional sign.

Steps

• Accept any number of leading whitespace characters (spaces, tabs, and other standard C whitespace).
• If the next character is + or -, consume it and apply the sign to the result.
• Read consecutive digit characters and build up the integer value.
• Stop immediately when a non-digit character is encountered.
• Return 0 if no digit was found after skipping whitespace and an optional sign.

Objective

Implement a function that reads a numeric value from a string, skipping any leading whitespace and handling an optional sign.

Steps

• Accept any number of leading whitespace characters (spaces, tabs, and other standard C whitespace).
• If the next character is + or -, consume it and apply the sign to the result.
• Read consecutive digit characters and build up the integer value.
• Stop immediately when a non-digit character is encountered.
• Return 0 if no digit was found after skipping whitespace and an optional sign.