用c写99乘法表

int main(int argc,char **argv){

        int a;
        for(a=1;a<=9;a++){
             int b;
             for(b=1;b<=a;b++){
                 printf("%d * %d = \t",b,a,a*b);
                 (a == b)&&printf("\n");
             }

        }  

}