题目内容

%d of the printf function is used to output signed decimal integers.

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The %f of the printf function, which is used to output real numbers in exponential form.

The output of the following program is______ 。 int main(void) { char m; m='B'+32; printf("%c\n",m); return 0; }

The following statement that cannot output character a is (Note: the ASCII code value of character a is 65, and the ASCII code value of character a is 97)

A. printf("％c\n"，'a'-32)；
B. printf("％d\n"，'A')；
C. printf("％c\n"，65)；
D. print-f("％c\n"，'B'-1)；

Functions called in C language can only be library functions.