Procedures as Parameters Some languages(such as C and Scheme)proved first-class procedure values:such values may be stored in a variable or returned by functions This creates many run-time issues: int main(){ proc make incrementer(int n){ int incrementer(int x){ return x n; 3 return incrementer; } proc my incr make incrementer(42); int y my incr(5); CS308 Compiler Theory 7Procedures as Parameters • Some languages (such as C and Scheme) proved first-class procedure values: such values may be stored in a variable or returned by functions • This creates many run-time issues: int main() { proc make incrementer(int n) { proc make _ incrementer(int n) { int incrementer(int x) { return x + n; } return incrementer; } … proc my incr make incrementer(42); proc my _ incr = make _ incrementer(42); int y = my_incr(5); } 7 CS308 Compiler Theory