Massivlar ustida amallar (amaliy dasturlar)

# include # include void main ( ) {float a [ ][2]={ {24.3,-4.15},{0,18.4},{-8.8,-15.75} }, b[ ][2] = { { 0.1,-4.8 }, { 6.8,7.1 }, { -2.8,0.40 } }; float c[3][2]; int i, j; for ( i = 0; i < 3; i + +) { for (j = 0; j < 2; j + +) { c [ i ][ j ] = a [ i ][ j ] + b [ i ][ j ]; cout <<” c[ “ << i <<”,” << j <<”] =” << c [ i ][ j ]; } cout << endl; } getch ( ); }

6-misol. 2 ta matrisa berilgan. Ularni ko’paytirish algoritmini ( dasturini ) tuzing. Izoh: 1-matrisaning ustunlari soni 2-matrisaning satrlari soniga teng bo’lish kerak.

# include # include # include void main ( ) { srand ( time ( 0 ) ); int a [3] [3], b [3] [3], c [3] [3], i, j, k; for ( i = 0; i < 3; i++) for ( j = 0; j < 3; j++) a [i] [j] = rand ( ) / 100; for ( i = 0; i < 3; i++) for ( j = 0; j < 3; j++) b [i] [j] = rand ( ) / 200; for ( i = 0; i < 3; i++) { for ( j = 0; j < 3; j++) { c [i] [j] = 0; for ( k = 0; k < 3; k++) c [i] [j] = c [i] [j] + a[i] [k] *b [k] [j]; cout << ”c=” << c [i] [j] << ” \t ”; } cout << endl; } }

7- m i s o l Berilgan matrisani transponirlash dastutini tuzing. Matrisani transponirlash deb, uning ustun va satr elementlarini o’zaro o’rin almashtirishga aytiladi, ya’ni: AIJ = BJI

# include # include void main ( ) { int a [3][3] = { { 1,2,3 },{ 4,5,6 },{ 7,8,9 } }, b [3][3], i, j; for ( i = 0; i < 3; i + +) { for ( j = 0; j < 3; j + +) { b [i] [j] = a [j] [i]; cout << ”b[“ << i <”,” << j << ”] = ” << b[i][j];} cout << endl; } getch ( ); }

Berilgan matrisa: 1 2 3 4 5 6 7 8 9 Hosil bo’lgan matrisa: 1 4 7 2 5 8 3 6 9

8 – m i s o l Matrisaning izini hisoblash dasturini tuzing. Matrisaning izi deb, bosh diagonal elementlarining yig’indisiga aytiladi.

# include # include void main ( ) { float a[3][3] = {{. . .},{. . .},{. . .}}, s1 = 0, s2 = 0; int i, j; for ( i = 0; i < 3; i + +) s1 = s1 + a [i] [i]; // bosh diagonal elementlari for ( i = 0; i < 3; i++) for ( j = 0; j < 3; j++) if ( i + j = = 2) s2 = s2 + a [ i ] [ j ]; // teskari cout <<” s1=” << s1 << ” s2=” << s2 << endl; getch ( ); }