C program to find the solution of linear equation

We can apply the software development method to solve the linear equation of one variable in C programming language.

Requirement

• The equation should be in the form of ax+b=0
• a and b are inputs, we need to find the value of x

Analysis

Here,

• An input is the a,b values.
• An output is the x value.

Algorithm

Refer an algorithm given below to find solution of linear equation.

Step 1. Start Step 2. Read a,b values Step 3. Call function Jump to step 5 Step 4. Print result Step 5: 

• i. if(a == 0)
  • Print value of c cannot be predicted
• Else
  • Compute c=-b/a
• Return c

Step 6: Stop

Program

Following is the C program to find the solution of linear equation −

 Live Demo

#include <stdio.h> #include <string.h> float solve(float a, float b){    float c;    if(a == 0){       printf("value of c cannot be predicted
");    }else{       c = -b / a;    }    return c; } int main(){    float a, b, c;    printf("
 enter a,b values: ");    scanf("%f%f", &a, &b);    c = solve(a, b);    printf("
 linear eq of one variable in the form of ax+b = 0, if a=%f,b=%f,then x=    %f",a,b,c);    return 0; }

Output

When the above program is executed, it produces the following result −

enter a,b values: 4 8 linear eq of one variable in the form of ax+b = 0, if a=4.000000, b=8.000000, then x= -2.000000