for(j=0;j<4;j++) a ［ i ］［ j ］ =1+i － j ；

for(i=0 ； i<4;i++) {

  for(j=0;j<4;j++)                                                                    输出结果： ______

    if(a ［ i ］［ j ］ >0) printf( ″ %3d ″ ,a ［ i ］［ j ］ );                                             ______

  putchar(' ＼ n') ；                                                                                 ______

}                                                                                                           ______

}

3. ＃ include <stdio.h>

void f(float a,float b,float* c)

{ static float x;float y;

x=(y=a>b?a:b)>x?y:x;

*c=x;

}

void main()

{ float a ［ 5 ］ ={2.5, － 1.5,7.5,4.5,6.5},x;

for(int i=0;i<4;i++) {                                                          输出结果： ______

    f(a