The snippet library.

C++Strings

Find a substring ↗

Check the result of std::string::find against npos.

C++✓ Tested

C++Sequence algorithms

Find both extremes in one algorithm call ↗

C++: Check for a nonempty input before dereferencing the returned iterators.

C++✓ Tested

C++Ordering & set operations

Find sorted set members missing from another set ↗

C++: set_difference writes elements present in the first sorted input but absent from the second.

C++✓ Tested

C++Ordering & set operations

Find the common members of two sorted sets ↗

C++: set_intersection requires both input ranges to be sorted under the same comparator.

C++✓ Tested

C++Sequence algorithms

Find the first value satisfying a condition ↗

C++: Compare the returned iterator with end before dereferencing it.

C++✓ Tested

C++Numeric parsing & calculations

Find the greatest common divisor with the standard library ↗

C++: std::gcd computes a nonnegative integer common divisor.

C++✓ Tested

C++Ordering & set operations

Find the insertion position for a sorted value ↗

C++: lower_bound returns the first position whose value is not less than the search key.

C++✓ Tested

C++Numbers & algorithms

Find the largest value ↗

Check for an empty C++ vector before dereferencing max_element.

C++✓ Tested

C++Numeric parsing & calculations

Find the least common multiple with the standard library ↗

C++: std::lcm combines positive integer periods into a common cycle.

C++✓ Tested

C++Getting Started

Find what remains after division ↗

C++: Use the remainder operator to count items left after forming complete groups.

C++✓ Tested

C++Numeric parsing & calculations

Format an integer into a caller-owned buffer ↗

C++: to_chars avoids allocation and reports whether the buffer was large enough.

C++✓ Tested

C++Numbers & algorithms

Format decimal output ↗

Use fixed and setprecision to print two C++ decimal places.

C++✓ Tested