题目内容

In the process of calling a function, directly or indirectly calling the function itself is called a repeated call to the function.

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Some problems can only be solved by recursive function calls.

#includeint fun(int a,int b) { if(b==0) return a; else return(fun(--a,--b)); } main() { printf("%d\n", fun(4,2));} The output of the program is ( ).

A. 1
B. 2
C. 3
D. 4

char （subcut）(char ,int,int); Define a function whose return value is a pointer

A function can return an integer value, a character value, a real value, etc., or data of pointer type.