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2025-yatcpu/lab4/csrc/fibonacci.c

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C

// Copyright 2021 Howard Lau
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
int fib(int a) {
if (a == 1 || a == 2) return 1;
return fib(a - 1) + fib(a - 2);
}
int main() {
*(int *)(4) = fib(10);
*(int*)(0) = 0xbabecafe; // anchor for program finished
return 0;
}