A small example of an array pointer in C
- 2020-04-02 01:09:07
- OfStack
1. Function: input the scores of 5 courses of 6 students, and calculate the average score of each student and the average score of each course.
2, C language implementation code :(in fact, is to use two-dimensional array to achieve, two-dimensional array reference transfer using array pointer to complete)
2, C language implementation code :(in fact, is to use two-dimensional array to achieve, two-dimensional array reference transfer using array pointer to complete)
#include <stdio.h>
#define STUDENT 5
#define SCORE 6
void input_array(float (*score)[STUDENT]);
void avg_score(float (*score)[STUDENT]);
void avg_course(float (*score)[STUDENT]);
int main(){
float a[SCORE][STUDENT];
input_array(a);
avg_course(a);
avg_score(a);
}
void input_array(float (*score)[STUDENT]){
int i, j;
for(i=0; i<SCORE; i++){
printf("input the %d student score:", i+1);
for(j=0; j<STUDENT; j++){
scanf("%f", score[i] + j);
}
}
}
void avg_course(float (*score)[STUDENT]){
int i,j;
float s;
for(j=0; j<STUDENT; j++){
printf("course%d ", j);
}
printf("n");
for(i=0; i<SCORE; i++){
s=0;
for(j=0; j<STUDENT; j++){
printf("%f ", *(score[i] + j));
s += *(score[i] + j);
}
printf("ts=%f, avg=%fn" , s,s/STUDENT);
}
}
void avg_score(float (*score)[STUDENT]){
int i,j;
float s;
for(i=0; i<STUDENT; i++){
s = 0;
for(j=0; j<SCORE;j++){
s+= *(score[j]+i);
}
printf("%f " , s/SCORE);
}
}