例 Ch3 1.c /*ch31c* #include<stdio. h> main i int c a c=65:a=B putchar(c); putchar('n); putchar(a) 运行结果:A B/*ch3_1.c*/ #include <stdio.h> main() { int c; char a; c=65; a='B'; putchar(c); putchar('\n'); putchar(a); } 运行结果：A B 例