运行 ID: 86860

Main.cc: In function ‘int main()’:
Main.cc:11:5: error: expected ‘,’ or ‘;’ before ‘while’
     while(a[i]=='A'||a[i]=='T'||a[i]=='G'||a[i]=='C'){
     ^~~~~
Main.cc:10:9: warning: unused variable ‘i’ [-Wunused-variable]
     int i=0
         ^