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- // Tong tren 1 dong ma tran so thuc
- // khai bao ham thu vien neu co
- #include<stdio.h>
- #include<conio.h>
- #define SIZE 100
- void nhap(float a[][SIZE],int &m,int &n,int &x)
- {
- scanf("%d%d%d",&m,&n,&x);// x la so dong
- for(int i=0;i<m;i++)
- {
- for(int j=0;j<n;j++)
- {
- scanf("%f",&a[i][j]);
- }
- }
- }
- float tong(float a[][SIZE],int x,int n)
- {
- float s=0;
- for(int i=0;i<n;i++)
- {
- s=s+a[x][i];
- }
- return s;
- }
- void main()
- {
- float a[SIZE][SIZE];
- int m,n,x;
- nhap(a,m,n,x);
- printf("%.2f",tong(a,x,n));
- }
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