for (i=0 c[i]=0; for (i=0; ic [a[i] ) for (i=0; i< printf(%d: %d\n",i clil) 【题7.127】main [5][4]={3,6,2,1,3,9,0,8,2,1,5,6,7,2,7,4,0,0,0,0} for(i=0;i<4;i++) 0;j4;j+) a[4][j]+a[i][j for(i=0;i<4;i++) printf(%3d", a[4][j]) 【题7.128】# define size30 mal float b[SIZE/5], sum [SIZE] for(k=2, i=0: I<SIZE: i++) alil=k: k+=2 sum =0.0 for (k=0, i=0: I<SIZE: i++) um + ali]: if(i+1)%5=0) b[k]= sum/ 0 ( The result is:n”);} for (i=0; i<5; i++) c[i] = 0; for (i=0; i<n; i++) c[a[i]]++; printf(“The result is:\n”); for (i=0; i<=4; i++) printf(“%d:%d\n”,i c[i]); printf(“\n”); } 【题 7.127】 main() { int a[5][4] = {3,6,2,1,3,9,0,8,2,1,5,6,7,2,7,4,0,0,0,0}; int i, j; for (i=0; i<4; i++) for (j=0; j<4; j++) a[4][j] += a[i][j]; printf(“The result is:\n”); for (i=0; i<4; i++) printf(“%3d”, a[4][j]); } 【题 7.128】 #define SIZE 30 main() { float b[SIZE/5], sum; int a[SIZE], i, j, k; for (k=2, i=0; i<SIZE; i++) { a[i] = k; k += 2; } sum = 0.0; for (k=0, i=0; i<SIZE; i++) { sum += a[i]; j = i + 1; if ((i+1)%5 == 0) { b[k] = sum / 5; sum = 0; k++; } } printf(“The result is:\n”);