c语言：矩阵相乘-矩阵相加 新手练习1
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2022-03-12 10:12:36
#include #include #include #include void main() { int a[4][4]; int b[4][4]; int c[4][4]; int i,j,k,s,t,m,n; srand ......
#include<stdio.h>#include<stdlib.h>#include<time.h>#include<string.h>void main(){ int a[4][4];
int b[4][4];
int c[4][4];
int i,j,k,s,t,m,n;
srand(time(0));
for(i=0;i<=3;i++)
for(j=0;j<=3;j++)
a[i][j]=rand()%20+1;
printf("a is \n");
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
printf("%5d",a[i][j]);
printf("\n");
printf("\n");
}
for(i=0;i<=3;i++)
for(j=0;j<=3;j++)
b[i][j]=rand()%20+1;
printf("b is \n");
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
printf("%5d",b[i][j]);
printf("\n");
printf("\n");
}
for(i=0;i<=3;i++)
for(j=0;j<=3;j++)
c[i][j]=a[i][j]+b[i][j];
printf("c is \n");
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
printf("%5d",c[i][j]);
printf("\n");
printf("\n");
}
int z;
z=0;
printf("a is \n");
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
printf("%5d",a[i][j]);
printf("\n");
printf("\n");
}
int my=0;
int sb=0;
k=0;
int jsq=0;
printf("my is : \n");
for(k=0;k<=3;k++)
{
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
{
sb=a[k][j]*b[j][i];
my=my+sb;
}
c[k][i]=my;
printf("%5d",c[k][i]);
jsq++;
if(jsq%4==0)
printf("\n");
my=0;
}
} }