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单项选择题

有以下程序
#include
main()
{
char i,j,n;
for(i='1';i<='9';i++)
{
    if(i<'3') continue;
        for(j='0';j<='9';j++)
            {
                    if(j='4') continue;
                    n=(i-'0')*10+j-'0';
                        printf("%d ",n);
                }
                if(i=='4') break;
}
printf("");
}程序运行后的输出结果是 A.
)30 31 40 41 B.
32 33 42 43 C.
34 35 44 45 D.
35 36 45 46

问答题

As the circuit shown in the figure, the voltage source us(t)=3cos4t V. Solve the current i=[填空1]mA，when t=1s.