100天开发c编译器
build step:
1. cd c100/
2. mkdir cmake-build-debug
3. cd cmake-build-debug
4. cmake ..
5. make
6. ./c100 "5+(1-3)*4/2" > tmp.s
7. clang tmp.s ../src/driver.c -o tmp.out
8. ./tmp.out
day1: 支持编译5+1-3*4/2
day2: 支持编译5+(1-3)*4/2
day3: 支持编译a=3;5+a*4/2-a;
day4: 支持错误提示, eg 输入"4+3"会提示 ';' expected
day5: 编译 a=3;a==3;a!=3;a>3;a>=3;a<3;a<=3;
day6: 能编译如下if语句
a=3; if (a!=4) a = 5;
a=3; if (a!=4) a = 5; else a = 6;
a=3; if (a!=4) {a = 5;a = a + a;} else {a = a*a; a = a + 10;}
day7: 编译 a=0; b=1; while (a < 10) {a = a+1; b=a+b;} b;