/*
Fiz o codigo no site replit.com, lá aparece as instruções tudo certo, se puder recomendo rodar o codigo lá.
Mas no caso aqui, siga as instruções abaixo:
QUAL SERÁ O TAMANHO DA MATRIZ (a ou b)??
a)2x2 b)3x3
Insira os valores por linha e com espaço
ex:
2x2: 3x3:
1 2 1 2 3
3 4 4 5 6
7 8 9
*/
#include <stdio.h>
#include <stdlib.h>
int main() {
char matriz;
int a, b, c, d, e, f, g, h, i;
printf("QUAL SERÁ O TAMANHO DA MATRIZ ??\n");
printf("a)2x2 b)3x3\n");
scanf("%c", &matriz);
if( matriz == 'a' || matriz == 'A'){
printf("INSIRA OS VALORES DA PRIMEIRA LINHA:\n");
scanf("%i" "%i", &a, &b);
printf("INSIRA OS VALORES DA SEGUNDA LINHA:\n");
scanf("%i" "%i", &c, &d);
printf("MATRIZ: \n");
printf("%i %i\n", a, b);
printf("%i %i\n", c, d);
int multiplicaap = a * d;
int multiplicaas = c * b;
float deta = multiplicaap - multiplicaas;
printf("DET = %.0f \n", deta);
if(deta != 0){
//matriz de cofator
int aa = 1 * d;
int ab = -1 * b;
int ac = -1 * c;
int ad = 1 * a;
printf("MATRIZ DE COFATOR: \n");
printf("%i %i\n", aa, ac);
printf("%i %i\n", ab, ad);
//matriz adjunta
printf("MATRIZ ADJUNTA: \n");
printf("%i %i\n", aa, ab);
printf("%i %i\n", ac, ad);
//matriz inversa
float ia = (1/deta) * aa;
float ib = (1/deta) * ab;
float ic = (1/deta) * ac;
float id = (1/deta) * ad;
printf("MATRIZ INVERSA: \n");
printf("%.2f %.2f\n", ia, ib);
printf("%.2f %.2f\n", ic, id);
}
else {
printf("NÂO EXISTE INVERSA POIS DET = 0 \n");
}
}
else if( matriz == 'b' || matriz == 'B'){
printf("INSIRA OS VALORES DA PRIMEIRA LINHA:\n");
scanf("%i" "%i" "%i", &a, &b, &c);
printf("INSIRA OS VALORES DA SEGUNDA LINHA:\n");
scanf("%i" "%i" "%i", &d, &e, &f);
printf("INSIRA OS VALORES DA TERCEIRA LINHA:\n");
scanf("%i" "%i" "%i", &g, &h, &i);
printf("MATRIZ:\n");
printf("%i %i %i\n", a, b, c);
printf("%i %i %i\n", d, e, f);
printf("%i %i %i\n", g, h, i);
int multiplicabp = (a * e * i) + (b * f * g) + (c * d * h);
int multiplicabs = (c * e * g) + (a * f * h) + (b * d * i);
float detb = multiplicabp - multiplicabs;
printf("DET = %.0f \n", detb);
if(detb != 0){
//matriz de cofator
int aa = 1 * ((e * i) - (h * f));
int ab = -1 * ((d * i) - (g * f));
int ac = 1 * ((d * h) - (g * e));
int ad = -1 * ((b * i) - (h * c));
int ae = 1 * ((a * i) - (g * c));
int af = -1 * ((a * h) - (g * b));
int ag = 1 * ((b * f) - (e * c));
int ah = -1 * ((a * f) - (d * c));
int ai = 1 * ((a * e) - (d * b));
printf("MATRIZ DE COFATOR: \n");
printf("%i %i %i\n",aa, ab, ac );
printf("%i %i %i\n",ad, ae, af );
printf("%i %i %i\n",ag, ah, ai );
// matriz adjunta
printf("MATRIZ ADJUNTA: \n");
printf("%i %i %i\n",aa, ad, ag );
printf("%i %i %i\n",ab, ae, ah );
printf("%i %i %i\n",ac, af, ai );
//matriz inversa
float ia = (1/detb) * aa;
float ib = (1/detb) * ad;
float ic = (1/detb) * ag;
float id = (1/detb) * ab;
float ie = (1/detb) * ae;
float iff = (1/detb) * ah;
float ig= (1/detb) * ac;
float ih = (1/detb) * af;
float ij = (1/detb) * ai;
printf("MATRIZ INVERSA: \n");
printf("%.2f %.2f %.2f\n", ia, ib, ic);
printf("%.2f %.2f %.2f\n", id, ie, iff);
printf("%.2f %.2f %.2f\n", ig, ih, ij);
}
else {
printf("NÂO EXISTE INVERSA POIS DET = 0 \n");
}
}
else
printf("Valor não encontrado!! Digite a ou b\n");
return 0;
}
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C language is one of the most popular general-purpose programming language developed by Dennis Ritchie at Bell laboratories for UNIX operating system. The initial release of C Language was in the year 1972. Most of the desktop operating systems are written in C Language.
When ever you want to perform a set of operations based on a condition if-else is used.
if(conditional-expression) {
// code
} else {
// code
}
You can also use if-else for nested Ifs and if-else-if ladder when multiple conditions are to be performed on a single variable.
Switch is an alternative to if-else-if ladder.
switch(conditional-expression) {
case value1:
// code
break; // optional
case value2:
// code
break; // optional
...
default:
// code to be executed when all the above cases are not matched;
}
For loop is used to iterate a set of statements based on a condition.
for(Initialization; Condition; Increment/decrement){
// code
}
While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.
while(condition) {
// code
}
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// code
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data-type array-name[size];
data-type array-name[size][size];
Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity.
Two types of functions are present in C
Library functions are the in-built functions which are declared in header files like printf(),scanf(),puts(),gets() etc.,
User defined functions are the ones which are written by the programmer based on the requirement.
return_type function_name(parameters);
function_name (parameters)
return_type function_name(parameters) {
//code
}