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【测试3】#includemain(){char ch;ch=getchar();switch(ch){case‘A’:printf(“%c”,’A’);case‘B’:printf(“%c”,’B’);break;default:printf(“%s\n”,”other”);}}当从键盘输入字母A时,输出结果为:

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语句填空:下列 for循环语句将输出: 0 1 2 0 1 2 0 1 2for( i=1; i<=9; i++ ) printf("%2d",——— );

当a=1,b=2,c=3时,执行以下程序段后,a的值为( )if(a>c) b=a;a=c;c=b;

完善程序并记录运行结果#include#()#define PI 3.14int main(){float a=2.71828;printf("log(a)=%f\n", log(a));printf("log10(100)=%f\n", log10(100));printf("exp(1)=%f\n", exp(1));printf("sin(PI/2)=%f\n", sin(PI/2));return 0;}运行结果:log(a)=()log10(100)=()exp(1)=()sin(PI/2)=()

【测试4】以下程序的执行结果是___。int a=3,b=5;max(int a,int b){ int c;c=a>b?a:b;return c;}main( ){ int a=8;printf("%d\n",max(a,b);}

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