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C Program- matrix addition in dynamic way
Posted Date: 10 Jun 2008 Resource Type: Articles/Knowledge Sharing Category: Computer & Technology
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Posted By: Girish Patil Member Level: Diamond
Rating:  Points: 2
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/*objective:
matrix addition in dynamic way
*/
void main()
{
int **a,**b,**c;
//int c[3][3];
int a_r,a_c,b_r,b_c;
int i,j;
clrscr();
again:
printf("\nenter rows and columns for matrix one:");
scanf("%d%d",&a_r,&a_c);
printf("\nenter rows and columns for matrix two:");
scanf("%d%d",&b_r,&b_c);
if(a_r!=b_r || a_c!=b_c)
{
printf("\ncan not add");
goto again;
}
/* allocate memory for matrix one */
a=(int **) malloc(sizeof(int *),a_r);
for( i=0;i {
a[i]=(int *) malloc(sizeof(int),a_c);
}
/* allocate memory for matrix two */
b=(int **) malloc(sizeof(int *),a_r);
for( i=0;i {
b[i]=(int *) malloc(sizeof(int),a_c);
}
/* allocate memory for sum matrix */
c=(int **) malloc(sizeof(int *),a_r);
for( i=0;i {
c[i]=(int *) malloc(sizeof(int),a_c);
}
printf("\n enter matrix one %d by %d\n",a_r,a_c);
for(i=0;i {
for(j=0;j {
scanf("%d",&a[i][j]);
}
}
printf("\n enter matrix two %d by %d\n",a_r,a_c);
for(i=0;i {
for(j=0;j {
scanf("%d",&b[i][j]);
}
}
/* add matrix one and matrix two */
for(i=0;i {
for(j=0;j {
c[i][j]=a[i][j]+b[i][j];
}
}
/* display result */
printf("\n sum of matrix one and two is\n");
for(i=0;i {
for(j=0;j {
printf("%d\t",c[i][j]);
}
printf("\n");
}
/*free memory*/
for(i=0;i {
free(a[i]);
}
free(a);
for(i=0;i {
free(b[i]);
}
free(b);
for(i=0;i {
free(c[i]);
}
free(c);
printf("\npress any key");
getch();
}
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Responses
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| Author: Lenin 10 Jun 2008 | Member Level: Diamond Points : 2 | hi giri are you a computer student , i know only small programs in C.But i know C is a SEA.Am i right ? I remember the days when i used to mugup the codings for Lab exams.still c fear is there.
Also still C is in flying colours
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