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A、 ‘\010’ B、”B” C、68 D、D 喵查答案：‘\010’
#include int main() { char a,b; int s; printf("please input a and b:\n"); a=getchar(); b=getchar(); s=a+b; printf("a=%c,b=%c",a,b); return 0; }
#include int main() { float a = 1234.567,b = 55.32; printf("a = %4.2f, b = %5.1f\n", a,b); return 0; }