Algorithm training of Blue Bridge Cup

1. Matrix multiplication

Enter two matrices, each of which is the m*s,s*n size. Outputs the result of multiplying the two matrices.

Enter the first line of the format, with a space separated by three positive integer m,s,n (neither more than 200).
The next M line, an integer separated by a space of s per line, represents matrix A (I,J).
Next S line, an integer separated by n spaces per line, represents matrix B (i,j). The output format is M-line, an integer separated by n spaces per line, and the value of Matrix C (i,j) after the output is multiplied. Answer:

#include <stdio.h>

int main (int argc, const char * argv[]) {

Enter M,s,n to determine the size of the rectangle

int m,s,n;

scanf ("%d%d%d", &m,&s,&n);

Input data, determine two matrices

int i,j;

int First[m][s];

int second[s][n];

for (i = 0; i < m; i + +) {

for (j = 0; J < s; ++j) {

scanf ("%d", &first[i][j]);

}

}

for (i = 0; i < s; + + i) {

for (j = 0; J < N; + + j) {

scanf ("%d", &second[i][j]);

}

}

Two multiplication of matrices

int third[m][n];

int z;

int total=0;

for (i = 0; i < m; ++i) {

for (j = 0; J < N; ++j) {

for (total= z = 0; z < s; ++z) {

Total + = First[i][z]*second[z][j];

}

THIRD[I][J] = total;

}

}

Print out the result of multiplying the matrix

for (i = 0; i < m; ++i) {

for (j = 0; J < N; ++j) {

printf ("%d", third[i][j]);

}

printf ("\ n");

}

return 0;

}

2.

Algorithm training of Blue Bridge Cup