稀疏矩阵加法：构造矩阵与人机交互实现

#include <stdio.h>
#include <stdlib.h> 
#define SIZE 100
typedef struct{  
      int i; 
      int j;  
      int e; 
}Triple; 
 
typedef struct {   
     Triple data[SIZE];   
     int mu,nu,tu;
 }SMatrix;   


SMatrix CreateMatrix(SMatrix sm) 
{   int i,flag;  
    int a,b,item;  
    printf("Please input the number of row, column and the number of the data which are not zero \n");   
    scanf("%d,%d,%d",&(sm.mu),&(sm.nu),&(sm.tu)); 
    while(sm.tu>SIZE){printf("The space is not enough\nplease input the number of the data which are not zero\n");scanf("%d",&sm.tu);}
while(sm.mu*sm.nu<sm.tu){printf("The number of data which are not zero is wrong please input again\n");scanf("%d",&sm.tu);}  
    for(i=0;i<sm.tu;i++)
    {  do    
{printf("\nPlease input the %d item's row (1~%d), column(1~%d)and its value:\n",i+1,sm.mu, sm.nu);
         scanf("%d,%d,%d",&a, &b,&item);        
         flag=0;    
 if(a>sm.mu||a<1||b>sm.nu||b<1||item==0)
             {flag=1;        
              printf("\nItems input error, please retry input...");