/* Write a calculator program(add,subtract,multiply,divide). Prepare user defined function for each functionality. */ #include <stdio.h> int add(int, int); int subtract(int, int); int multiply(int, int); int divide(int, int); int main(void) { int a, b, ch; do { printf("\n Calculator Program "); printf("\n======================="); printf("\n 1 - Add "); printf("\n 2 - Subtract "); printf("\n 3 - Multiply "); printf("\n 4 - Divide "); printf("\n 5 - Exit "); printf("\n======================="); printf("Enter Your Choice :"); scanf("%d",&ch); printf("\n Enter First Value :"); scanf("%d",&a); printf("\n Enter Second Value :"); scanf("%d",&b); switch(ch) { case 1: printf("Add = %d",add(a,b)); break; case 2: printf("Subtract = %d...
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